- also fix ${JQ} from $(JQ)

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

- also use cp instead of rsync

fix(developer): support CLDR sample keyboards 🙀

With this change, fr-t-k0-azerty.xml and mt.xml can load without any
ERROR 300007: The source file has an invalid structure errors.

Other errs show up, but it is progress.

Fixes #7411

CLDR data update from https://github.com/unicode-org/cldr/pull/2469

- displays is not an array

#7411

- backspace is now a transform type. Keep the same test.

- dtd is in a subdirectory to match CLDR layout

- update tooling in common and kmc
- update spec
- update test files

CLDR commit: b3c0702a837c4e11193483b85253b11e148fb06b

For: chore(developer): update kmc to latest LDML keyboard DTD version 🙀  #7411

jq -S . >  ldml-keyboard.schema.json

sort the keys, so that subsequent changes can be reviewed

For: chore(developer): update kmc to latest LDML keyboard DTD version 🙀  #7411

For: chore(developer): update kmc to latest LDML keyboard DTD version 🙀  #7411

chore(common): update build.sh dependencies for epic-ldml 🙀

- update test fixture
- update kmx_plus.cpp to require this

Fix: 7404

fix(core): xstring/utf32 review feedback

chore(core): ldml: split out vkey processing 🙀 

feat(core): kmx_plus: add accessors for elem 🙀

feat(core): early implementation of transforms 🙀

For: #7418

Co-authored-by: Eberhard Beilharz <ermshiperete@users.noreply.github.com>

feat(core): ldml: Use new UTF-16 to UTF-32 function 🙀

feat(core): kmx_xstring: New UTF-16 to UTF-32 function 🙀

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

chore(common): fixup broken kmlmc script dependency 🙀

Rewrite of remaining new build.sh scripts will come in a subsequent PR.

@keymanapp-test-bot skip

chore: merge master into feature-ldml 🙀

chore(common): further tweaks to builder scripts

feat(common): builder dependency support

chore(common/models, web): more script updates

for #7234

- update per review comments

for #7234

- new test file for transforms
- new class, ldml_transforms

for #7234

- also a test case with a 🙀 key on the tiny keyboard

For #7418

- plus test

For #7418