chore(developer): kmc - use local reference for json schema 🙀

refactor(developer): rename `kmldmlc` to `kmc` 🙀

chore(developer): remove name from meta section 🙀

Fixes #7221.

Fixes #7237.

Full clean, configure and build will be required for Core, Developer
after this change.

kmc is much less unwieldy a name than kmldmlc, and becomes our platform
for future compiler integration. Start of implementation for #5283 also.

Fixes #7214.

chore: merge master into feature-ldml 🙀

chore(core): improve xstring macros 🙀

feat(developer): add nyc to kmldmlc for test coverage 🙀

feat(developer): kmldmlc compiler for transforms 🙀

refactor(developer): split kmxplus builder functions into separate files 🙀

auto: increment master version to 16.0.59

- move Utf32CharToUtf16 to inline
- remove Is_SMP and call sites, use Utf32CharToUtf16 instead.

For: #7134

Co-authored-by: Marc Durdin <marc@durdin.net>

- review comments
- kmx_xstring: add and document macros, add Utf32CharToUtf16
- unit tests for kmx_xstring macros

Fixes: #7134

feat(common/models): extra Unicode-based wordbreaker unit tests

fix(common/models): reconnects unit tests for worker-internal submodules 🎡

- remove hacky utf-32 processing
- add utf-32 test case to test_kmx_plus.cpp
- change kmx_plus to return std::u16string
- kmx_xstring: add Uni_IsBMP() macro

Fixes: #7134

auto: increment master version to 16.0.58

feat(core): ldml keyboard transform elements 🙀

Merge pull request #7203 from keymanapp/chore/developer/add-test-for-messages-and-improve-reporting-on-e2e

chore(developer): add test for compiler messages and cleanup e2e test 🙀

refactor(developer): cleanup virtual key constants 🙀

feat(developer): add vkey support 🙀

feat(developer): add unit tests for 'name' compiler 🙀

refactor(developer): kmldmlc - rename `CompilerErrors` to `CompilerMessages` 🙀

feat(developer): add compiler hint for non-minimal loca 🙀

chore(core): order sections according to binary format 🙀

feat(core): add 'name' section 🙀

feat(common): hextobin `index` command 🙀

chore(core): define zero length string vs null string for kmxplus 🙀

feat(core): add version field to meta 🙀

feat(common): add size and offset calculators to hextobin 🙀

feat(developer): use json schema to verify source file 🙀

Merge pull request #7183 from keymanapp/feat/developer/7180-add-kmldmlc-test-to-developer-test-build

feat(developer): add kmlmc and kmldmlc to `make test` 🙀