[Core] Add compile/make macro to core (#15959)

* [Core] Add KC_MAKE keycode to core

fix linting

fix testing error

work around test idiocyncracies

fix more lint

something something stupid tests

add doc

* updates based on feedback

* Add bad names

* Fixup docs

* semantics but cleaner

Co-authored-by: precondition <[email protected]>

* Hide oneshot checks behind preprocessors

* Move no-compile option around

* Fix formatting

* make shift optional

* Make opt in

* fix formatting

* update send string function name

Co-authored-by: Joel Challis <[email protected]>

Co-authored-by: precondition <[email protected]>
Co-authored-by: Joel Challis <[email protected]>

quantum/quantum_keycodes.h

@@ -595,6 +595,8 @@ enum quantum_keycodes {
 
     MAGIC_TOGGLE_CONTROL_CAPSLOCK,
 
+    QK_MAKE,
+
     // Start of custom keycode range for keyboards and keymaps - always leave at the end
     SAFE_RANGE
 };