fix(ios): cross-paragraph keyboard rules

chore(linux): Update debian changelog

auto: increment beta version to 17.0.281

feat(windows): move the code kmshell.dpr to unit so that only the includes are in dpr 

fix(android): handle surrogate pairs in selection range indexing

test(developer): kmc unit test infrastructure messages

feat(developer): adds kmc message command

fix(ios): context-initial diacritic handling

refactor(developer): reorganize messages for adding details

refactor(developer): cleanup kmn compiler message namespaces

docs(developer): kmc-kmn api documentation and some message documentation

Merge pull request #10819 from keymanapp/chore/common/9843-keyman-touch-layout-schema-restrictive-layer-id

chore(common): loosen .keyman-touch-layout schema layer id requirements

fix(developer): make sure scroll bar appears when needed in global welcome

auto: increment beta version to 17.0.280

chore(resources): update to latest ldml: xmlns, uset

Merge branch 'refactor/developer/10207-kmn-compiler-message-namespaces' into refactor/developer/10207-message-detail

Merge branch 'docs/developer/10207-kmc-kmn-documentation' into refactor/developer/10207-kmn-compiler-message-namespaces

fix(linux): Fix libkeymancore-dev dependencies

Co-authored-by: Steven R. Loomis <srl295@gmail.com>

Realtes to #10207.

Adds a new `kmc message` command which prints detailed information about
any or all compiler messages, in JSON, text, or markdown formats.

Markdown format is emitted to file in a structured way to be deployed to
the help site automatically (coming in a subsequent commit).

auto: increment beta version to 17.0.279