feat: impl wallpaper

src/caelestia/subcommands/wallpaper.py

@@ -1,5 +1,8 @@
+import json
 from argparse import Namespace
 
+from caelestia.utils.wallpaper import get_colours_for_wall, get_wallpaper, set_random, set_wallpaper
+
 
 class Command:
     args: Namespace
@@ -8,4 +11,11 @@ class Command:
         self.args = args
 
     def run(self) -> None:
-        pass
+        if self.args.print:
+            print(json.dumps(get_colours_for_wall(self.args.print, self.args.no_smart)))
+        elif self.args.file:
+            set_wallpaper(self.args.file, self.args.no_smart)
+        elif self.args.random:
+            set_random(self.args)
+        else:
+            print(get_wallpaper())