update eosti keymaps (#10610)

* adds eosti/planck keymaps

* updates eosti keymaps

* add header guard to bdn9 config.h

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

* reduce file size of compiled firmware

* move console disable to rules.mk

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

keyboards/keebio/bdn9/keymaps/eosti/rules.mk

@@ -1 +1,4 @@
 TAP_DANCE_ENABLE=yes
+CONSOLE_ENABLE = no
+COMMAND_ENABLE = no
+LTO_ENABLE = yes