Non-volatile memory data repository pattern (#24356)

* First batch of eeconfig conversions.

* Offset and length for datablocks.

* `via`, `dynamic_keymap`.

* Fix filename.

* Commentary.

* wilba leds

* satisfaction75

* satisfaction75

* more keyboard whack-a-mole

* satisfaction75

* omnikeyish

* more whack-a-mole

* `generic_features.mk` to automatically pick up nvm repositories

* thievery

* deferred variable resolve

* whitespace

* convert api to structs/unions

* convert api to structs/unions

* convert api to structs/unions

* fixups

* code-side docs

* code size fix

* rollback

* nvm_xxxxx_erase

* Updated location of eeconfig magic numbers so non-EEPROM nvm drivers can use them too.

* Fixup build.

* Fixup compilation error with encoders.

* Build fixes.

* Add `via_ci` keymap to onekey to exercise VIA bindings (and thus dynamic keymap et.al.), fixup compilation errors based on preprocessor+sizeof.

* Build failure rectification.

builddefs/common_features.mk

@@ -30,6 +30,8 @@ QUANTUM_SRC += \
     $(QUANTUM_DIR)/logging/sendchar.c \
     $(QUANTUM_DIR)/process_keycode/process_default_layer.c \
 
+include $(QUANTUM_DIR)/nvm/rules.mk
+
 VPATH += $(QUANTUM_DIR)/logging
 # Fall back to lib/printf if there is no platform provided print
 ifeq ("$(wildcard $(PLATFORM_PATH)/$(PLATFORM_KEY)/printf.mk)","")

builddefs/generic_features.mk

@@ -61,6 +61,7 @@ define HANDLE_GENERIC_FEATURE
     SRC += $$(wildcard $$(QUANTUM_DIR)/process_keycode/process_$2.c)
     SRC += $$(wildcard $$(QUANTUM_DIR)/$2/$2.c)
     SRC += $$(wildcard $$(QUANTUM_DIR)/$2.c)
+    SRC += $$(wildcard $$(QUANTUM_DIR)/nvm/$$(NVM_DRIVER_LOWER)/nvm_$2.c)
     VPATH += $$(wildcard $$(QUANTUM_DIR)/$2/)
     OPT_DEFS += -D$1_ENABLE
 endef