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/mount_fuji_4k/json-scheme.json

@@ -0,0 +1,24 @@
+{
+  "name": "GVCCI Color Scheme",
+  "author": "",
+  "color": [
+    "#1c304a",
+    "#b47607",
+    "#2a53db",
+    "#84837e",
+    "#0551f9",
+    "#ab791b",
+    "#045ee0",
+    "#cfd4e3",
+    "#2a486f",
+    "#f09c09",
+    "#5c7ce7",
+    "#a4a29b",
+    "#3d7afd",
+    "#de9e25",
+    "#247dfc",
+    "#f5f6f9"
+  ],
+  "foreground": "#400c00",
+  "background": "#dce6f2"
+}