[Keyboard] move g heavy industry boards into /gboards (#16040)

Co-authored-by: zvecr <git@zvecr.com>

keyboards/gboards/ergotaco/rules.mk

@@ -0,0 +1,16 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+CUSTOM_MATRIX 		= yes
+EXTRAKEY_ENABLE		= yes
+CONSOLE_ENABLE  	= yes
+COMMAND_ENABLE		= yes
+
+# A bunch of stuff that you shouldn't touch unless you
+# know what you're doing.
+#
+# No touchy, capiche?
+SRC += matrix.c i2c_master.c