refactor(command-system): replace legacy CommandSystem with SourceViewCommandSystem

- Remove CommandSystem and CommandSystemMixin
- Introduce SourceViewCommandSystem and shared libs/command_system
- Update CommandsController to use new command system
- Adjust package exports accordingly

feat(lsp): clean up and normalize LSP configurations

- Fix invalid JSON in Godot LSP config (processId -> null, formatting)
- Remove embedded jedi-language-server config from main Python LSP config
- Add separate jedi-lsp-server-config.json

refactor(markers): rename move_word -> move_along_word for clarity

- Update all usages in MarkerManager

chore: minor formatting and whitespace fixes

src/libs/command_system.py

@@ -0,0 +1,50 @@
+# Python imports
+import types
+
+# Lib imports
+
+# Application imports
+from .event_factory import Event_Factory, Code_Event_Types
+
+
+
+class CommandSystem:
+    def __init__(self, commands: dict | types.ModuleType):
+        super(CommandSystem, self).__init__()
+
+        self.commands: dict | types.ModuleType = commands
+        self.data: tuple    = ()
+
+
+    def set_data(self, *args, **kwargs):
+        self.data = (args, kwargs)
+
+    def exec(self, command: str) -> any:
+        """
+            The 'exec' method passes the default 'self.data' to commands where custom args are not needed.
+            Ex: The 'code' widget has many internally created commands that
+            only need 'source_view' and so 'set_data' is called to set that.
+        """
+        if not hasattr(self.commands, command): return
+        method = getattr(self.commands, command)
+
+        args, kwargs = self.data
+        return method.execute(*args, **kwargs)
+
+    def exec_with_args(self, command: str, *args, **kwargs) -> any:
+        """
+            The 'exec_with_args' method passes custom args with the understanding
+            that the recipient has proper method signature to accept it- whether
+            *args or **kwargs or something else entirely.
+        """
+        if not hasattr(self.commands, command): return
+
+        method = getattr(self.commands, command)
+        return method.execute(*args, **kwargs)
+
+    def add_command(self, command_name: str, command: callable):
+        setattr(self.commands, command_name, command)
+
+    def remove_command(self, command_name: str, command: callable):
+        if hasattr(self.commands, command_name):
+            delattr(self.commands, command_name)