Refactor GDM module to correspond SOLID principles

- I don't know how I will support this hell ahh code;
- Added some methods to gnome_shell_theme_builder.py;
- Added "color" property "install" method from theme_base.py.

scripts/utils/global_theme/gdm_remover.py

@@ -0,0 +1,65 @@
+from scripts.utils.global_theme.ubuntu_alternatives_updater import UbuntuGDMAlternativesUpdater
+from scripts.utils.gresource import GresourceBackupNotFoundError
+from scripts.utils.gresource.gresource import Gresource
+from scripts.utils.logger.console import Console, Color, Format
+from scripts.utils.logger.logger import LoggerFactory
+
+
+class GDMThemeRemover:
+    """
+    Responsible for safely removing installed GDM themes.
+
+    This class handles:
+    - Restoring original gresource files from backups
+    - Removing theme alternatives from the system
+    - Providing feedback about removal status
+    """
+    def __init__(self,
+                 gresource: Gresource,
+                 alternatives_updater: UbuntuGDMAlternativesUpdater,
+                 logger_factory: LoggerFactory):
+        """
+        :param gresource: Handler for gresource operations
+        :param alternatives_updater: Handler for update-alternatives operations
+        :param logger_factory: Factory for creating loggers
+        """
+        self.gresource = gresource
+        self.alternatives_updater = alternatives_updater
+        self.remover_logger = GDMRemoverLogger(logger_factory)
+
+    def remove(self):
+        """Restores the gresource backup and removes the alternatives."""
+        self.remover_logger.start_removing()
+
+        try:
+            self.gresource.restore()
+            self.alternatives_updater.remove()
+            self.remover_logger.success_removing()
+        except GresourceBackupNotFoundError:
+            self.remover_logger.error_removing()
+
+    def warn_not_installed(self):
+        self.remover_logger.not_installed_warning()
+
+
+class GDMRemoverLogger:
+    def __init__(self, logger_factory: LoggerFactory):
+        self.logger_factory = logger_factory
+        self.removing_line = None
+
+    def start_removing(self):
+        self.removing_line = self.logger_factory.create_logger()
+        self.removing_line.update("Theme is installed. Removing...")
+
+    def success_removing(self):
+        self.removing_line.success("Global theme removed successfully. Restart GDM to apply changes.")
+
+    def error_removing(self):
+        formatted_shell = Console.format("gnome-shell", color=Color.BLUE, format_type=Format.BOLD)
+        self.removing_line.error(f"Backup file not found. Try reinstalling {formatted_shell} package.")
+
+    def not_installed_warning(self):
+        self.logger_factory.create_logger().error(
+            "Theme is not installed. Nothing to remove.")
+        self.logger_factory.create_logger().warn(
+            "If theme is still installed globally, try reinstalling gnome-shell package.")