chore(developer): Merge branch 'feat/developer/ldml-compiler-kmx-structures' into feat/developer/ldml-compiler-kmx-builder

fix(core): fixes for kmx_file rearrangement 🙀

fix breaks in #7111 and prior

- try stdint.h instead of cstdint

#7098

fix breaks in #7111 and prior

#7098

Revert "feat(core): turn @keymanapp/ldml-keyboard-constants into a module 🙀"

chore: merge master into feature-ldml

feat(core): turn @keymanapp/ldml-keyboard-constants into a module 🙀

fix(core): ldml: remove 0-length arrays 🙀

Splits the building of keyboardprocessor_ldml.h into a separate
tsconfig.build.json, and designates keyboardprocessor_ldml.ts as a new
Typescript/Node module @keymanapp/ldml-keyboard-constants.

Includes an example usage in the (currently unused) kmx-plus.ts.

feat(common): add parameter variable support to `builder_` functions

Generates a valid .kmx file (legacy structures only) from an
intermediate in-memory structure. Included for completeness, although it
is anticipated that LDML keyboards will not have any groups, though they
will probably have some metadata stores.

#7098

Defines kmx binary structures and wireframe builder to emit a .kmx file.

Currently the builder will emit a roughly correct header. Next steps are
to build a .kmx file with stores, groups and keys, to match existing KMX
compiler behaviour. Once that is done, will return to generation of
KMXPlus data structures.

Compiler is designed to work independent of file system so it should run
inside browser or node environment. kmldmlc.ts is node-specific, but all
other modules should be multi-platform.

feat(developer): LDML keyboard compiler - infrastructure 🙀

Co-authored-by: Darcy Wong <darcy_wong@sil.org>
Co-authored-by: Steven R. Loomis <srl295@gmail.com>

fix(windows): Add invalidate context action to non-updatable parse

chore: Change platform advocates per discussion

fix(android): verify browser before starting activity

#7098

- update builder to print out string as well as hex
- change to symbol name

auto: increment master version to 16.0.51

chore: merge master into feature-ldml

- need a pragma to suppress this on MSVC

#7098