feat(config): Make Badger cache size configurable

[arepala-uml]

1. Added badgerCacheSize to the config (dingo.yaml) to allow control over Badger's memory usage.
2. Ensured backward compatibility by providing a default badgerCacheSize fallback when the config is not set.
3. Added WithBadgerCacheSize and it sets the maximum cache size (in bytes).
4. Updated node.go and database initialization to pass the configured cache size.
5. Passed badger cache size through node.go to database and blob store layers.
6. Updated all unit test cases where database.New() was invoked.

Closes #694