Massive configuration overhaul

Currently paying the price of months of non-diligent git usage.

Here's what has changed.

- Theming support in Gvcci and wpgtk
- Dropping support for i3
- Supporting EXWM
- Many Elisp modules
- Collapsed redundant directories in ./configs

configs/shared/.gvcci/themes/japan_cherry_blossoms_4k/json-scheme.json

@@ -0,0 +1,24 @@
+{
+  "name": "GVCCI Color Scheme",
+  "author": "",
+  "color": [
+    "#4a481c",
+    "#72614b",
+    "#51683d",
+    "#646346",
+    "#4f6b60",
+    "#948905",
+    "#788c1c",
+    "#e9dfc9",
+    "#706b29",
+    "#988163",
+    "#6f8e53",
+    "#888760",
+    "#688f80",
+    "#cfc006",
+    "#a4bf26",
+    "#fbf9f4"
+  ],
+  "foreground": "#000000",
+  "background": "#eeecd0"
+}