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_landscape/columns-with-headers.txt

@@ -0,0 +1,25 @@
+Background
+#9cc8d3
+
+Foreground
+#000000
+
+Normal ANSI Colors
+#203f46
+#312cc6
+#1b20e1
+#2235c7
+#37489c
+#103ec7
+#136f9d
+#bbe2f6
+
+Bright ANSI Colors
+#2f5f6a
+#5954db
+#4e51ec
+#4558e1
+#4e61c2
+#2658ee
+#1a95d3
+#f1f9fd