chore(common): add missing deps and files for npm publish

fix(common): consolidate npm publishing

fix(developer): improve 'does not exist' error message

fix(developer): kmc should not validate as well as compile keyboard

chore(developer): kmc-kmn should build all baseline fixtures

refactor(developer): DRY kmc module references

auto: increment master version to 17.0.87

The build/ folder for most packages was missing due to being listed in
.gitignore.

Also, @keymanapp/ldml-keyboard-constants package was not being published
despite being a dependency of @keymanapp/kmc-keyboard.

Instead of relying on npm's use of .gitignore / .npmignore (which has
seriously wonky behaviours), we list the files that should be included
in package.json.

NPM Wonky behaviours: it seems that .npmignore causes .gitignore in the
same folder to be ignored. But, higher level .gitignore files still
affect the files included in the package, which makes
specification-by-exclusion painful (negating exclusions, etc). We do not
recommend use of .npmignore anywhere for this reason.

Fixes #8586.

All npm publish actions in the repository are now run as part of the
Developer release build, hosted at present by kmc, until we setup a
higher-level build script to do it.

Adds a 'pack' action which mirrors 'publish' for all npm packages.

Removes unnecessary dev dependencies of models-templates and
models-wordbreakers from kmc-model.

Web Release build CI step has been updated to check for presence of
.build-builder.

Fixes #7310.

docs(windows): link to wiki architecture faq page

auto: increment master version to 17.0.86

Fixes #8508.

Fixes #8512.

Note: the compile phase is identical to the validation phase at this
point, so no need to run validate prior to compile.

Fixes #8540.

fix(ios): fixes xcode-triggered debug, run builds

fix(developer): add DRY_RUN variable to build.sh

chore(developer): AddWarning and SetError cleanup

Fixes #8574.

Also ensures that kmc is published after its dependencies.

auto: increment master version to 17.0.85

* Splits compiler interface functions that return bool into
  CompilerInterfaces.cpp, and moves `SetError` define to that unit so
  it can't be used accidentally elsewhere
* Audit of `AddWarning` calls and only those that are used in bool
  functions now `return FALSE` (with new `AddWarningBool`) whereas all
  others `return CERR_Break`

fix(mac): fix corrupt installer

docs: clarify dependency meanings in build-utils

chore(android): Update projects to use Java 11

Relates to #8542.

epic: kmcompx - kmcmpdll cross-platform compiler 🚑