`g_free` will return if the parameter is NULL, so we don't have to
check for that.

See glib [documentation](https://docs.gtk.org/glib/func.free.html).

Part of #8598.

chore(linux): Add code coverage reports for keyman-config and keyman-system-service

chore(web): web build streamlining

auto: increment master version to 17.0.190

refactor(linux): Simplify adding keyboard

refactor(linux): Use auto cleanup (and fix some memory leaks)

auto: increment master version to 17.0.189

chore(android,windows): Update crowdin strings for Kannada

auto: increment master version to 17.0.188

fix: path for ESM increment-version, and exit code

* Fixes the path for the increment-version module
* Uses exit code 50 instead of 1 to indicate 'success, but no change',
  so that low-value error exit codes as used by node.js don't
  indavertently continue the build

chore: clean up a few minor discrepancies in builder.inc.sh

epic(developer): refactor package-metadata for 17.0 🎺

chore: merge master into package-metadata

chore(developer): add --for-publishing to kmc 🎺

chore(developer): Update kmc-package xml2js dependency 🎺

chore(common): stop using xml2js.processors.firstCharLowerCase 🎺

fix(developer): non-minimal BCP 47 tags in kps should be a hint 🎺

Merge pull request #9711 from keymanapp/refactor/developer/9708-keyboard_info-example-keys-as-string

refactor(developer): .keyboard_info examples should use keys as a string 🎺

feat(developer): introduce WelcomeFile property to packages 🎺

chore: allowJs for imported schemas 🎺

chore: merge master into package-metadata 🎺

Before we add a keyboard we check if we already added this keyboard
(in a different area). If we did (with the same or newer version) we
skip this keyboard. This change now immediately returns whereas previously
we set a flag and then didn't execute the rest of the method.

chore(linux): Improve Sentry reports

- Some uses of `KEYMAN_ROOT` (not cross-repo compatible)
- `set -eu` and `SHLVL` now set there as well