TypeScript improvements

[jasonpaulos]

This PR improves TypeScript generation in a few ways:

• Indexer types are now generated. These types are treated as completely separate from algod types and they live in a different file.
• A static method fromParsedJSON has been added to each generated model class. This method allows JSON responses to be turned into our generated class types.
• Small bugfix: arrays of integer types used to be incorrectly built as number | bigint[], but they are now correctly built as (number | bigint)[].
• Quality of life: the JS SDK formatter is now ran automatically after code generation.

The changes here were used to generate the code in algorand/js-algorand-sdk#663 and algorand/js-algorand-sdk#662

[winder]

These changes look fine to me. Presumably you're happy with the generated code, so I don't see any reason not to merge this.

[michaeldiamant]

Since @jasonpaulos is OOO for the week, leaving a note to broadcast sequencing suggestion:

• Merge REST API: Add algod block hash endpoint, add indexer block header-only param. js-algorand-sdk#665
• Merge this PR + regenerate js-algorand-sdk changes for Code generation improvements for boxes js-algorand-sdk#662 and Enhancement: Code generation improvements js-algorand-sdk#663.

[michaeldiamant]

My approval is primarily driven by review of generated changes in algorand/js-algorand-sdk#663.