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/pixelated_china/json-scheme.json

@@ -0,0 +1,24 @@
+{
+  "name": "GVCCI Color Scheme",
+  "author": "",
+  "color": [
+    "#222441",
+    "#db0252",
+    "#1d61d6",
+    "#da0252",
+    "#0561e4",
+    "#18af6d",
+    "#3ea882",
+    "#c2efdc",
+    "#333662",
+    "#fe1d70",
+    "#4883e8",
+    "#fe1d70",
+    "#2b81fb",
+    "#22e28e",
+    "#5ec5a0",
+    "#f3fcf8"
+  ],
+  "foreground": "#71dea0",
+  "background": "#10111f"
+}