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/tilix.json

@@ -0,0 +1,33 @@
+{
+    "name": "Gvcci",
+    "comment": "Gvcci generated theme.",
+    "foreground-color": "#71dea0",
+    "background-color": "#10111f",
+    "use-theme-colors": false,
+    "use-highlight-color": false,
+    "highlight-foreground-color": "#10111f",
+    "highlight-background-color": "#39d597",
+    "use-cursor-color": false,
+    "cursor-foreground-color": "#25ac76",
+    "cursor-background-color": "#25ac76",
+    "use-badge-color": true,
+    "badge-color": "#71dea0",
+    "palette": [
+        "#222441",
+        "#db0252",
+        "#1d61d6",
+        "#da0252",
+        "#0561e4",
+        "#18af6d",
+        "#3ea882",
+        "#c2efdc",
+        "#333662",
+        "#fe1d70",
+        "#4883e8",
+        "#fe1d70",
+        "#2b81fb",
+        "#22e28e",
+        "#5ec5a0",
+        "#f3fcf8"
+    ]
+}