This PR adds tests for #148.
## Summary
Moves the Android emulator branch's test coverage out of #148 so that PR
can be reviewed without the test churn. This branch adds the test files
back on top of the (now test-stripped) base branch.
Tests inseparable from source changes (`describe-tool`,
`workspace-reader`, `workspace-reader-integration`) and the
`boot-simulator.test.ts` deletion stayed on #148 - base PR's CI passes
on its own.
## Test plan
- [x] `npx tsc --build` — clean
- [x] `npx prettier --check .` — clean
- [x] `npm test --workspaces --if-present` — 585/585 tool-server tests
pass; all other workspaces green
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Co-authored-by: Paweł Fornagiel <pawel.fornagiel2@gmail.com>
Ignacy Łątka