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_flowers_4k/column.txt

@@ -0,0 +1,18 @@
+#a6bcd9
+#162000
+#1e3048
+#6d6349
+#073cc4
+#ab0fbd
+#0b4492
+#6b0ecc
+#52696d
+#bbd4f7
+#2e496b
+#928461
+#1151f7
+#d81ced
+#105ecb
+#8925f1
+#6c8a90
+#f1f6fd