* Add failing tests for package config validation error wrapping
* Wrap package schema validation errors in HomeAssistantError
* Fix yamllint errors
* Rework package merge validation
Ignore invalid package definitions instead of failing startup.
Output error messages with locations if possible when a package
definition has errors.
* Ruff format
* Fix linter errors
* Move package_definition_schema to module scope
* Move inner function to module level
* Merge exception handlers
Merge exception handlers for config schema validation and package merge
to avoid untested code branches
* Fix long lines and doc strings
* More minor changes to exception handler
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Co-authored-by: Erik Montnemery <erik@montnemery.com>