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/geometric_dark_4k/columns-with-headers.txt

@@ -0,0 +1,25 @@
+Background
+#0e1721
+
+Foreground
+#efefef
+
+Normal ANSI Colors
+#1e2f45
+#999999
+#704dc2
+#e80bb2
+#3c69b4
+#c38b35
+#3992aa
+#f6d0bb
+
+Bright ANSI Colors
+#2d4769
+#b8b8b8
+#9378d5
+#f739c9
+#6189cc
+#d6a75f
+#58b0c8
+#fef6f1