DCompact Update 1 (#3202)

* Add Plover layer to DCompact from Planck default

* Fix up and update DCompact READMEs

* Add missing Steno features

* Switch flags to re-enable extrakeys

* Fix compilation bug in Chimera layout

keyboards/planck/keymaps/dcompact/rules.mk

@@ -2,3 +2,14 @@ ifndef QUANTUM_DIR
 	include ../../../../Makefile
 endif
 
+# https://beta.docs.qmk.fm/reference/config-options#feature-options
+# Features Specifically Wanted
+EXTRAKEY_ENABLE = yes
+STENO_ENABLE = yes
+NKRO_ENABLE = yes
+AUDIO_ENABLE = yes
+
+# Features taking up space
+MOUSEKEY_ENABLE = no
+MIDI_ENABLE = no
+CONSOLE_ENABLE = no