feat: update RomM package to 5.1.0

- pin the RomM 5.1.0 multi-architecture image
- mount the main volume at /romm for hardlink support
- update release notes, configuration text, and documentation
- replace the invalid icon with the official RomM isotipo
- ignore local AI workspace files and build artifacts

startos/utils.ts

@@ -4,10 +4,5 @@ export const uiHostId = 'ui'
 export const databaseName = 'romm'
 export const databaseUser = 'romm'
 
-export const mainMounts = {
-  library: '/romm/library',
-  resources: '/romm/resources',
-  assets: '/romm/assets',
-  config: '/romm/config',
-  redis: '/redis-data',
-} as const
+export const mainMountpoint = '/romm'
+export const redisMountpoint = '/redis-data'