Add QMK configuration and flashing documentation for fingerpunch/sweeeeep keyboard

- Created CONFIG_HIERARCHY.md to explain configuration file hierarchy and settings placement.
- Added FLASH_HANDEDNESS.md detailing the flashing process for split keyboard handedness using Liatris controllers.
- Introduced LIATRIS_QUICK_START.txt as a quick reference for handedness setup and flashing steps.
- Included LICENSE file for GNU General Public License v2.
- Added Makefile for building QMK firmware with user-specific configurations.
- Updated README.md with instructions for configuring and building QMK userspace.
- Created build_all.sh script to automate the building of regular and handedness initialization firmware.
- Added qmk.json to define userspace version and build targets.

root_files_backup/Makefile

@@ -0,0 +1,16 @@
+.SILENT:
+
+MAKEFLAGS += --no-print-directory
+
+QMK_USERSPACE := $(patsubst %/,%,$(dir $(shell realpath "$(lastword $(MAKEFILE_LIST))")))
+ifeq ($(QMK_USERSPACE),)
+    QMK_USERSPACE := $(shell pwd)
+endif
+
+QMK_FIRMWARE_ROOT = $(shell qmk config -ro user.qmk_home | cut -d= -f2 | sed -e 's@^None$$@@g')
+ifeq ($(QMK_FIRMWARE_ROOT),)
+    $(error Cannot determine qmk_firmware location. `qmk config -ro user.qmk_home` is not set)
+endif
+
+%:
+	+$(MAKE) -C $(QMK_FIRMWARE_ROOT) $(MAKECMDGOALS) QMK_USERSPACE=$(QMK_USERSPACE)