* test: add .tool-versions test
* feat: extract locally defined mise package versions
* test: .tool-versions unit tests
* docs: integration tests docs
* build: local mise config for less annoying warnings
* feat: pull python ecosystem versions from mise
* feat: internal support for extracting mise-specified package versions from app folder
* refactor: move mise package version methods into context
* test: snapshots
* test: multiple test.json expectation lines
this is using newly implemented multiple expectations syntax
* test: support multiple expectations per test.json entry, don't use additional non-deterministic contains to throw an error
* refactor: refine mise interface
* refactor: make mise versions easier for a provider to use
* test: snapshot update
* refactor: move mise local package logic to step builder
* test: move mise package version extraction to mise step builder tests
* refactor: move mise package into mise step builder
