📦 Created config files with common code

- Created common.nix for various configs
- Created theme.nix for theme related configs
- Moved some code to more logical files
- Moved some standalone files into nix multiline strings, in order to
  inject data

home-manager/hyprland/hyprshot.nix

@@ -0,0 +1,19 @@
+let
+  common = import ../../common.nix;
+in
+{
+  home.sessionVariables = {
+    HYPRSHOT_DIR = "${common.dir.pictures}/screenshots"; # Store screenshots here
+  };
+
+  wayland.windowManager.hyprland.settings = {
+    "$mainMod" = "SUPER";
+    "$shiftMod" = "$mainMod SHIFT";
+
+    bind = [
+      "$mainMod, PRINT, exec, hyprshot -m window" # Window
+      ", PRINT, exec, hyprshot -m output" # Monitor
+      "$shiftMod, PRINT, exec, hyprshot -m region" # Region
+    ];
+  };
+}