Add Djinn. (#17382)

* Add Djinn.

* Review comments.

* Further cleanup.

keyboards/tzarc/djinn/keymaps/default/rules.mk

@@ -0,0 +1,15 @@
+DEBUG_MATRIX_SCAN_RATE_ENABLE ?= api
+ENCODER_MAP_ENABLE = yes
+SWAP_HANDS_ENABLE = no
+
+VPATH += keyboards/tzarc/djinn/graphics
+SRC += \
+	theme_djinn_default.c \
+	djinn.qgf.c \
+	lock-caps-ON.qgf.c \
+	lock-scrl-ON.qgf.c \
+	lock-num-ON.qgf.c \
+	lock-caps-OFF.qgf.c \
+	lock-scrl-OFF.qgf.c \
+	lock-num-OFF.qgf.c \
+	thintel15.qff.c