[Feature Request]: Support remove zero Balance<T> for Token and empty NFTGallery<Meta,Body> for NFT

[jolestar]

Feature Request

Describe the Feature Request

Provider function for users to remove zero Balance or empty NFTGallery<Meta,Body>.

• Users do not want to see zero Balance or empty NFTGallery.
• Users want to reduce state space.

Describe Preferred Solution

1. Provider a script function to do this.
2. Support this feature in Wallet.

Describe Alternatives

Related Code

Additional Context

If the feature request is approved, would you be willing to submit a PR?
Yes / No (Help can be provided if you need assistance submitting a PR)