Implemented live development server

src/cpl_cli/live_server/file_change_handler.py

@@ -0,0 +1,23 @@
+from watchdog.events import FileSystemEventHandler
+
+from cpl.console.console import Console
+from cpl_cli.live_server.live_server import LiveServerThread
+
+
+class FileChangeHandler(FileSystemEventHandler):
+
+    def __init__(self, live_server: LiveServerThread):
+        FileSystemEventHandler.__init__(self)
+
+        self._live_server = live_server
+
+    def on_any_event(self, event):
+        if event.is_directory:
+            return None
+
+        elif event.event_type == 'modified':
+            # Event is modified, you can process it now
+            if str(event.src_path).endswith('.py'):
+                Console.write_line(f'Detected change in {event.src_path}')
+                self._live_server.kill_application()
+                self._live_server.start()

src/cpl_cli/live_server/live_server.py

@@ -0,0 +1,38 @@
+import os
+import subprocess
+import sys
+import threading
+from datetime import datetime
+
+from cpl.console import Console
+
+
+class LiveServerThread(threading.Thread):
+
+    def __init__(self, path: str):
+        threading.Thread.__init__(self)
+
+        self._path = path
+        self._main = ''
+        self._command = []
+        
+    @property
+    def command(self) -> list[str]:
+        return self._command
+    
+    @property
+    def main(self) -> str:
+        return self._main
+
+    def run(self):
+        self._main = os.path.join(self._path, 'main.py')
+        if not os.path.isfile(self._main):
+            Console.error('Entry point main.py does not exist')
+            return
+
+        Console.write_line('Read successfully')
+        now = datetime.now()
+        Console.write_line(f'Started at {now.strftime("%Y-%m-%d %H:%M:%S")}\n\n')
+
+        self._command = [sys.executable, self._main, ''.join(sys.argv[2:])]
+        subprocess.run(self._command)