Eric Gebhart user space and keymaps (#17487)

Co-authored-by: Drashna Jaelre <drashna@live.com>

users/ericgebhart/extensions/unicode.h

@@ -0,0 +1,24 @@
+#pragma once
+/*
+  Copyright 2018-2022 Eric Gebhart <e.a.gebhart@gmail.com>
+
+  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/>.
+*/
+// Custom one-or-more-shot implementation that does not rely on timers
+// and persists across layer changes. Based on the users/callum implementation
+// at https://github.com/callum-oakley/qmk_firmware/tree/master/users/callum
+// make it easy to put unicode keys into process_record
+
+
+void process_unicode_strs(uint16_t keycode, keyrecord_t *record);