Better error message about missing default blueprint bundle

[BONNe]

Is your feature request related to a problem?

If a player removes default.json there is no clear error message why creating new island returns an error message.
Also, if there is issues with blueprint loading, there is also not a clear error message where the issue is: (bundle or blueprint).

It is hard to see where the issue is just from the error message.

Describe the solution you'd like.

First, all gamemode addons should report if default.json is missing.
Also, as it is required by default, then probably, the loading plugin should always check if it exists, and add it if missing.

Second, if blueprints are broken or missing from the bundle, probably a better solution would be to replace them with bedrock, as oneblock, instead of placing 2 cobble blocks (safe spot teleport).

Third, the error message should be clear. It should return the reason why blueprint pasting failed (if possible).

Describe alternatives you've considered.

Alternatively, we could add an option in gamemode config file to define the default blueprint bundle name. It would "fix" issue when players want to remove default.json file.

Agreements

• I have searched for and ensured there isn't already an open issue regarding this.
• I have ensured the feature I'm requesting isn't already in the latest supported BentoBox build or Addons.

Other

No response