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/lego_manhattan/json-scheme.json

@@ -0,0 +1,24 @@
+{
+  "name": "GVCCI Color Scheme",
+  "author": "",
+  "color": [
+    "#483e1e",
+    "#7f3508",
+    "#144a32",
+    "#7e6a09",
+    "#167584",
+    "#5a400e",
+    "#1f7778",
+    "#bdf4ee",
+    "#6d5d2c",
+    "#b84d0b",
+    "#207b53",
+    "#b79a0d",
+    "#1ea3b9",
+    "#8f6516",
+    "#2ba7a8",
+    "#f2fdfc"
+  ],
+  "foreground": "#400000",
+  "background": "#d5c699"
+}