Extracted installation methods, created a new class for theme installers

scripts/install/global_theme_installer.py

@@ -0,0 +1,28 @@
+import os
+
+from scripts import config
+from scripts.gdm import GlobalTheme
+from scripts.install.theme_installer import ThemeInstaller
+
+
+class GlobalThemeInstaller(ThemeInstaller):
+    theme: GlobalTheme
+
+    def remove(self):
+        gdm_rm_status = self.theme.remove()
+        if gdm_rm_status == 0:
+            print("GDM theme removed successfully.")
+
+    def _define_theme(self):
+        gdm_temp = os.path.join(config.temp_folder, config.gdm_folder)
+        self.theme = GlobalTheme(self.colors, f"{config.raw_theme_folder}/{config.gnome_folder}",
+                                config.global_gnome_shell_theme, config.gnome_shell_gresource,
+                                gdm_temp, mode=self.args.mode, is_filled=self.args.filled)
+
+    def _install_theme(self, hue, theme_name, sat):
+        self.theme.prepare()
+        self.theme.install(hue, sat)
+
+    def _apply_tweaks_to_theme(self):
+        for theme in self.theme.themes:
+            self._apply_tweaks(theme.theme)