[Keymap] userspace and keymap for rupa (#9786)

* first iteration of my keymap

* * move to userspace
* "script" modes
* keymap bling

* OM and RUPA keys

and tryin to micro-optimize in process_records.c

* woops

swap shifted rupas
forgot to add codepoint for OM

* Apply suggestions from code review

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

* add call to process_record_keymap, per review

* fall through to process_record_keymap

* license headers

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

users/rupa/rupa.h

@@ -0,0 +1,54 @@
+/*
+Copyright 2020 rupa <rupa@lrrr.us> @rupa
+
+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
+#include QMK_KEYBOARD_H
+#include "version.h"
+#include "process_records.h"
+#include "unicode.h"
+
+enum userspace_layers {
+    _QWERTY = 0,
+    _RAISE,
+};
+
+enum userspace_custom_keycodes {
+    VRSN = SAFE_RANGE,
+    LOD,
+    RUPA,
+    U_FRACT,
+    U_MONOS,
+    U_SCRPT,
+};
+
+typedef struct font_t {
+    uint32_t upper_alpha;
+    uint32_t lower_alpha;
+    uint32_t zero_glyph;
+} font_t;
+
+font_t fraktu_bold;
+font_t monosp_bold;
+font_t script_bold;
+
+bool script_mode_translate(font_t *translator, bool is_shifted, uint32_t keycode);
+
+#define RAISE   MO(_RAISE)
+#define OS_RGUI OSM(MOD_RGUI)
+#define OS_RALT OSM(MOD_RALT)
+#define OS_RCTL OSM(MOD_RCTL)
+#define OS_RSFT OSM(MOD_RSFT)