fix: Use group transaction node instead of re-interpret cast for grou…

…p transaction values

feat: Default to the build command if no other command is present

Merge pull request #118 from algorandfoundation/fix/box_del

fix: ensure bool is returned for all calls to `box_del` op code

fix: Ensure switch case clauses are only evaluated if they are 'reached'

feat: Allow code to be resolved from virtual files

fix: add missing properties and functions box expression builders

chore: Update target puya version and recompile approvals

fix: Allow template vars as module constants

chore: Bump build node version and refactor json bigint serialization

docs: Update docs for box maybe