Add module that provides utilities and information related to localization.
Initial implementation includes code to generate keyboard configs
for locale set by user.
Fix the following:
WARNING: Failed to import pmb.commands.kconfig_check.
WARNING: Failed to import pmb.commands.kconfig_edit.
WARNING: Failed to import pmb.core.crosstool.
Crosstool has been dropped and kconfig_check/_edit code has been merged
into a kconfig module.
* Make sure all Python modules are documented by adding a bit of shell
to .ci/docs.sh
* Remove non-existing module references from .rst
* Fix various warnings from sphinx by adjusting Python docstrings
* Add class member docs to ApkindexBlock
