Dracula Vortex Submodule & Redshift Location Update

- Update dwm-flexipatch and dracula-gtk submodules
- Add dracula-vortex submodule
- Move xournalpp config from ~/.xournalpp/ to ~/.config/xournalpp/
- Update location in redshift config

.gitmodules

@@ -62,6 +62,10 @@
 	path = .themes/dracula-qbittorrent
 	url = git@github.com:dracula/qbittorrent.git
 	branch = master
+[submodule ".themes/dracula-vortex"]
+	path = .themes/dracula-vortex
+	url = git@github.com:dracula/vortex-mod-manager.git
+	branch = main
 [submodule ".config/dwm-flexipatch"]
 	path = .config/dwm-flexipatch
 	url = git@github.com:balajsra/dwm-flexipatch.git