[Keymap] clean up userspace, add XD75 / Keyboardio Atreus (#13121)

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

users/replicaJunction/rj_keycodes.h

@@ -0,0 +1,63 @@
+/* Copyright 2021 Joshua T.
+ *
+ * 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
+
+// Custom keycodes and macros
+enum userspace_custom_keycodes {
+    QK_MAKE = SAFE_RANGE,  // QMK make command
+    QK_FLSH,               // QMK flash command
+    QK_VERS,               // QMK version
+
+    // Programming macros
+    PRG_EQ,                // ==
+    PRG_NE,                // !=
+    PRG_GEQ,               // >=
+    PRG_LEQ,               // <=
+    PRG_ARR,               // =>
+    PS_ITEM,               // $_        (PowerShell - $PSItem variable)
+    FS_PIPE,               // |>        (F# pipe operator)
+    FS_ARR,                // ->        (F# lambda / pattern matching)
+    SHEBANG,               // #!
+
+    // USER_CAPS_WORD_ENABLE
+    CAPWORD,
+
+#ifdef USER_NUM_WORD_ENABLE
+    NUMWORD,
+#endif
+
+    // USER_ENABLE_CUSTOM_SHIFT_CODES
+    // Custom characters that send different symbols than usual when shifted
+    KCC_COM,                // , or !
+    KCC_DOT,                // . or @
+    KCC_QUO,                // ' or ~
+
+    // USER_MOUSE_JIGGLE_ENABLE
+    MS_JIGL,
+
+    // USER_ENABLE_SUPER_ALT_TAB
+    SALTTAB,
+
+    // USER_ENABLE_SECRETS
+    K_SECR1,
+    K_SECR2,
+    K_SECR3,
+    K_SECR4,
+
+    DYNAMIC_MACRO_RANGE
+};