For Keyman Developer Server, add app.webmanifest so that it can be saved
to the home screen; other pages should not require this.
Fixes: #16172
Test-bot: skip
* Add `TKeymanPaths.KeymanLocalePath` for consistent access to locales
folder, and update references.
* Remove the `SKDefaultLanguageCode` string and hard code the default
language in CustomisationMessages.pas.
* Hide the test locale 'qqq' on release builds.
Fixes: #15164
* Also renames resources/environment.sh to resources/build/mac/xcode-environment.inc.sh.
* Adds a few more exclusions to linux/scripts/dist.sh
Fixes: #14478
Test-bot: skip
Build-bot: build
Resolves Gradle deprecation and language version warnings
```gradle
Java compiler version 21 has deprecated support for compiling with source/target version 8.
```
The `java.toolchain.languageVersion` syntax is a superset that covers the previous syntax `android.compileOptions`
Refactor the publish action for Android to ensure that symbols are
published to Sentry for any 'release' buildLevel -- test releases and
alpha/beta/stable releases.
Splits the publish action into `publish-symbols` and
`publish-play-store` so that they can be run separately as needed, as
symbols can be published for test builds, but play store is only touched
for actual releases.
Note: examining the build logs and Sentry server state, it looks like
the publish to Sentry has not been happening for quite a while, so this
commit refactors the Sentry publishing code and establishes the
fv-keyboards publish target also.
Fixes: #14284
Build-bot: release
Test-bot: skip
Move mac-specific build scripts and functions into our established
patterns for scripts under resources/build:
* new mac/mac.inc.sh for mac-specific functions, from mac-utils.inc.sh,
utils.inc.sh, builder-basic.inc.sh
* move other mac-specific scripts into mac/
Relates-to: #14065
Build-bot: build
Test-bot: skip
Removes a number of unused functions from the file, renames remaining
functions to match our builder script prefix patterns, removes unused
imports from various build scripts (e.g. Android).
Fixes: #14453
Move mac-specific build scripts and functions into our established
patterns for scripts under resources/build:
* new mac/mac.inc.sh for mac-specific functions, from mac-utils.inc.sh,
utils.inc.sh, builder-basic.inc.sh
* move other mac-specific scripts into mac/
Relates-to: #14065
Build-bot: build
Test-bot: skip
