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/mount_fuji_4k/columns-with-headers.txt

@@ -0,0 +1,25 @@
+Background
+#dce6f2
+
+Foreground
+#400c00
+
+Normal ANSI Colors
+#1c304a
+#b47607
+#2a53db
+#84837e
+#0551f9
+#ab791b
+#045ee0
+#cfd4e3
+
+Bright ANSI Colors
+#2a486f
+#f09c09
+#5c7ce7
+#a4a29b
+#3d7afd
+#de9e25
+#247dfc
+#f5f6f9