[Keymap] Drashna's Feature madness (#6128)

* Fix my Tap Dance issues after I broke them

* Cleanup and organization of userspace documentation

As well as some additional cleanup of functions due to review of documentation.

* Enable Tapdance on Glow and remove more animations

* Revert to Eager PR debouncing

* Add better check for startup animation

* Move where RGB Matrix defines are listed

* Limit RGB Matrix max val

* Update keyboard for Iris Rev 3 conflicts

* Enable encoder support on planck ez

* Remove is_master check from corne\'s OLED code

* Overhaul OLED screens for my Corne

* One last removal

* Show RGB valu On both sides

* Updates for OLED display info

* Fix compile issues for rgb config

* Disabled Space Cadet for all drashna keymaps

* Fix OLED Screen configs

* Minor OLED Tweaks

* Revert some Iris changes

* Fix song include

* Handle MAKE macro for the Corne boards better

* Add super hacky-hack for eeconfig initialization

* Add audio support for Fractal since Elite Cs support it

* Add defines for keycode steps

* Add White layout

* Update Corne RGB info

* Add fun effects to layer indication for RGB Matrix enabled boards

* Use proper define for product name detection

* Update formatting

* Use custom timeout mechanism for OLED timeout

* Fix up OLED screen HSV code for new HSV structure

* Better handle turning off RGB Matrix when sleeping

* Disable MultiSplash Animation

* Change Iris back to using serial

* Why was RGB disabled?!?!?!

* Limit val in rgb_matrix_layer_helper function

* Remove EECONFIG setting for RGB matrix

1 files changed, 123 insertions, 0 deletions

diff --git a/users/drashna/readme_secrets.md b/users/drashna/readme_secrets.md
new file mode 100644
index 0000000000..a9408dc2ef
--- /dev/null
+++ b/users/drashna/readme_secrets.md
@@ -0,0 +1,123 @@
+# Secret Macros
+
+With help from gitter and Colinta, this adds the ability to add hidden macros from other users.  
+
+First, I have several files that are hidden/excluded from Git/GitHub.  These contain everything needed for the macros. To hide these files, open `.git/info/exclude` and add `secrets.c` and `secrets.h` to that file, below the comments.
+
+And this requires `KC_SECRET_1` through `KC_SECRET_5` to be added in your keycode enum (usually in your `<name>.h` file) the keycodes for the new macros. 
+
+## Git Exclusion 
+
+To prevent `git` from seeing, or committing the secret files, you can exclude them.   What's the point of having secrets if they're posted on GitHub for everyone to see!?!
+
+You can do this with the `.git/info/exclude` file, so that it's only ignored locally.  Unfortunately, that means it's not consistently handled on each system. 
+
+However, if you create a `.gitignore` file in the same folder, you keep things consistent between every system that the code is checked out on. 
+
+```c
+secrets.c
+secrets.h
+```
+
+## secrets.c
+
+Here is the magic. This handles including the "secrets", and adding the custom macros to send them. 
+
+```c
+#include "drashna.h"  // replace with your keymap's "h" file, or whatever file stores the keycodes
+
+#if (__has_include("secrets.h") && !defined(NO_SECRETS))
+#include "secrets.h"
+#else
+// `PROGMEM const char secret[][x]` may work better, but it takes up more space in the firmware
+// And I'm not familiar enough to know which is better or why...
+static const char * const secret[] = {
+  "test1",
+  "test2",
+  "test3",
+  "test4",
+  "test5"
+};
+#endif
+
+bool process_record_secrets(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case KC_SECRET_1 ... KC_SECRET_5: // Secrets!  Externally defined strings, not stored in repo
+      if (!record->event.pressed) {
+        clear_oneshot_layer_state(ONESHOT_OTHER_KEY_PRESSED);
+        send_string_with_delay(secret[keycode - KC_SECRET_1], MACRO_TIMER);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
+```
+
+## secrets.h
+
+Now, for the actual secrets!  The file needs to look like 
+
+```c
+static const char *  secrets[] = {
+  "secret1",
+  "secret2",
+  "secret3",
+  "secret4",
+  "secret5"
+};
+```
+
+Replacing the strings with the codes that you need.
+
+## Process Record
+
+In whichever file you have your `process_record_*` function in, you will want to add this to the top:
+
+```c
+__attribute__ ((weak))
+bool process_record_secrets(uint16_t keycode, keyrecord_t *record) {
+  return true;
+}
+```
+
+This is so that the function can be called here, and replaced in the `secrets.c` file, and so it won't error out if it doesn't exist.
+
+And then, in the `process_record_user` function, assuming you have `return process_record_keymap(keycode, record)` here,  you'll want to replace the "final" return with the following. Otherwise, you want to replace the `return true;` with `return process_record_secrets(keycode, record);`
+
+```c
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    // your existing macro code here. 
+    return process_record_keymap(keycode, record) && process_record_secrets(keycode, record);
+}
+```
+
+## rules.mk
+
+Here, you want your `/users/<name>/rules.mk` file to "detect" the existence of the `secrets.c` file, and only add it if the file exists.  
+
+Additionally, to ensure that it's not added or processed in any way, it checks to see if `NO_SECRETS` is set. This way, if you run `make keyboard:name NO_SECRETS=yes`, it will remove the feature altogether. 
+
+```make
+ifneq ($(strip $(NO_SECRETS)), yes)
+    ifneq ("$(wildcard $(USER_PATH)/secrets.c)","")
+        SRC += secrets.c
+    endif
+endif
+```
+
+Alternately, if you want to make sure that you can disable the function without messing with the file, you need to add this to your `/users/<name>/rules.mk`, so that it catches the flag:
+
+```make
+ifneq ("$(wildcard $(USER_PATH)/secrets.c)","")
+  SRC += secrets.c
+endif
+
+ifeq ($(strip $(NO_SECRETS)), yes)
+    OPT_DEFS += -DNO_SECRETS
+endif
+```
+
+## Extras
+
+Additionally, because this file isn't present in the repo at all, you could add additional functionality that nobody else will see.