[Keymap] Add froggy keymap with 106/109 (JP) settings for helix keyboard (#8967)

* initial commit for froggy 106 key mode

* add mode indicator on OLED

* use #pragma once instead of include guard

* remove unusable codes

* remove audio codes, because helix rev.2 has no audio feature

* use set_single_persistent_default_layer

* remove eeprom update check

keyboards/helix/rev2/keymaps/froggy_106/rules.mk

@@ -0,0 +1,23 @@
+# QMK Standard Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+#   See TOP/keyboards/helix/rules.mk for a list of options that can be set.
+#   See TOP/docs/config_options.md for more information.
+#
+LINK_TIME_OPTIMIZATION_ENABLE = no  # if firmware size over limit, try this option
+
+# Helix Spacific Build Options
+# you can uncomment and edit follows 7 Variables
+#  jp: 以下の7つの変数を必要に応じて編集し、コメントアウトをはずします。
+HELIX_ROWS = 5              # Helix Rows is 4 or 5
+OLED_ENABLE = yes           # OLED_ENABLE
+LOCAL_GLCDFONT = yes        # use each keymaps "helixfont.h" insted of "common/glcdfont.c"
+LED_BACK_ENABLE = yes       # LED backlight (Enable WS2812 RGB underlight.)
+LED_UNDERGLOW_ENABLE = no   # LED underglow (Enable WS2812 RGB underlight.)
+LED_ANIMATIONS = yes        # LED animations
+# IOS_DEVICE_ENABLE = no      # connect to IOS device (iPad,iPhone)
+
+# convert Helix-specific options (that represent combinations of standard options)
+#   into QMK standard options.
+include $(strip $(KEYBOARD_LOCAL_FEATURES_MK))