server recommend restart on package updates

Signed-off-by: Vladimir Mandic <mandic00@live.com>

CHANGELOG.md

@@ -15,6 +15,7 @@
     it also does not work with control and video tabs which are the core of sdnext nowadays  
     so it has been removed from built-in extensions: manual installation is still possible  
 - **Other**
+  - server will note when restart is recommended due to package updates  
   - **logging** enable `debug`, `docs` and `api-docs` by default  
   - **ipex** simplify internal implementation  
   - refactor to use new libraries  

installer.py

@@ -56,6 +56,7 @@ args = Dot({
 })
 git_commit = "unknown"
 diffusers_commit = "unknown"
+restart_required = False
 extensions_commit = { # force specific commit for extensions
     'sd-webui-controlnet': 'ecd33eb',
     'adetailer': 'a89c01d'
@@ -345,6 +346,8 @@ def installed(package, friendly: str = None, reload = False, quiet = False): # p
                             log.warning(f'Install: package="{p[0]}" installed={pkg_version} required={p[1]} allowing experimental')
                         else:
                             log.warning(f'Install: package="{p[0]}" installed={pkg_version} required={p[1]} version mismatch')
+                            global restart_required # pylint: disable=global-statement
+                            restart_required = True
                     ok = ok and (exact or args.experimental)
             else:
                 if not quiet:

launch.py

@@ -297,6 +297,9 @@ def main():
     installer.log.info(f'Installer time: {init_summary()}')
     get_custom_args()
 
+    if installer.restart_required:
+        installer.log.warning('Restart is recommended due to packages updates...')
+
     uv, instance = start_server(immediate=True, server=None)
     t_server = time.time()
     t_monitor = time.time()