[Keymap] bcat keymaps and userspace (#10705)

Add Eco keymap, factor Crkbd keymap to community layout, other minor tweaks

* Remove outdated Crkbd Ctrl key positioning info

* Add Left Alt key to Lily58 keymap

* Lily58 no longer overrides default TAPPING_TERM

* Refactor Crkbd keymap to use new community layout

* Fix underglow animations for Crkbd w/ Split Common

* Add initial Eco keymap

* Update outdated reference to Crkbd layout

* Add keymap links to userspace readme

* Add copyright notices to files changed in this PR

layouts/community/split_3x6_3/bcat/config.h

@@ -0,0 +1,34 @@
+/* Copyright 2020 Jonathan Rascher
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#if defined(KEYBOARD_crkbd_rev1_common) || defined(KEYBOARD_crkbd_rev1_legacy)
+#    define EE_HANDS
+
+#    if defined(RGBLIGHT_ENABLE)
+/* Configure RGB for underglow only (first six LEDs on each side). */
+#        undef RGBLED_SPLIT
+#        define RGBLED_SPLIT \
+            { 6, 6 }
+#    endif
+
+#    if defined(RGB_MATRIX_ENABLE)
+/* Limit max RGB LED current to avoid tripping controller fuse. */
+#        undef RGB_MATRIX_MAXIMUM_BRIGHTNESS
+#        define RGB_MATRIX_MAXIMUM_BRIGHTNESS 150
+#    endif
+#endif