add supress_updates variable to config

This new `fxmanifest.lua` variable (when true) will stop checking for script updates

People REALLY dont like being told when somethings fixed.

This will stop the update notifications for both `jim_bridge` and the script that loads it.

fxmanifest.lua

@@ -7,7 +7,6 @@ rdr3_warning 'I acknowledge that this is a prerelease build of RedM, and I am aw
 games { 'gta5', 'rdr3' }
 lua54 'yes'
 
-
 files {
     'starter.lua',
     'shared/*.lua',
@@ -24,4 +23,6 @@ server_scripts {
 client_scripts {
     'clientFrameworkCache.lua',
     'ui_modules/*.lua',
-}
+}
+
+suppress_updates 'true'   -- set to 'true' to disable update pings