Added NodeJS package with WebPack for some assets.

Moved JS files to WebPack system.

Created python script to watch both WebPack and Dotnet files simultaneously

scripts/watch_all.py

@@ -0,0 +1,24 @@
+import os
+import asyncio
+import sys
+
+SERVER_CSPROJ_DIR = "src/MultiShop/Server"
+ASSET_WATCH_DIR = "src/MultiShop/Client/assets"
+
+
+async def exec(cmd, path):
+    os.chdir(os.path.dirname(os.path.realpath(__file__)))
+    os.chdir(os.pardir)
+    os.chdir(path)
+    proc = await asyncio.create_subprocess_shell(
+        cmd,
+        stdout=sys.stdout,
+        stderr=sys.stderr,
+    )
+
+    await proc.wait()
+
+async def main():
+    await asyncio.gather(exec("dotnet watch run", SERVER_CSPROJ_DIR), exec("npm run watch", ASSET_WATCH_DIR))
+
+asyncio.run(main())