update CI to latest distribution version
apply phpcbf with moodle coding standard
add coverage information to tests
define class properties in board_table
import core_external functions

add Moodle 4.3 to CI with PHP 8.2

Update Moodle-Plugin-CI to version 4
and make tasks more strict according to the recommendations

fix coding style eslint warnings

allow eslint warnings for CI

rebuild javascript

revert CI to v3

update CI to latest gha.dist
https://github.com/moodlehq/moodle-plugin-ci/blob/main/gha.dist.yml

rebuild js

…tandards

…le styles.css