Initial structure for Ergodox as subprojects

Only the EZ default keymaps compiles at the moment though.

keyboards/ergodox/keymaps/algernon/Makefile

@@ -0,0 +1,35 @@
+BOOTMAGIC_ENABLE=no
+COMMAND_ENABLE=no
+SLEEP_LED_ENABLE=no
+UNICODE_ENABLE=no
+FORCE_NKRO ?= yes
+DEBUG_ENABLE = no
+CONSOLE_ENABLE = no
+TAP_DANCE_ENABLE = yes
+KEYLOGGER_ENABLE ?= yes
+
+ifeq (${FORCE_NKRO},yes)
+OPT_DEFS += -DFORCE_NKRO
+endif
+
+ifeq (${KEYLOGGER_ENABLE},yes)
+OPT_DEFS += -DKEYLOGGER_ENABLE
+CONSOLE_ENABLE = yes
+endif
+
+KEYMAP_VERSION = $(shell \
+ if [ -d "${KEYMAP_PATH}/.git" ]; then \
+  cd "${KEYMAP_PATH}" && git describe --abbrev=6 --dirty --always --tags --match 'v*' 2>/dev/null; \
+ else echo QMK; fi)
+
+KEYMAP_BRANCH = $(shell \
+ if [ -d "${KEYMAP_PATH}/.git" ]; then \
+  cd "${KEYMAP_PATH}"; \
+ fi; \
+ git rev-parse --abbrev-ref HEAD 2>/dev/null)
+
+OPT_DEFS += -DKEYMAP_VERSION=\"$(KEYMAP_VERSION)\\\#$(KEYMAP_BRANCH)\"
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif