WR422914 Subplugin refactor

[SimonThornett]

Taken from the README.md:

Post version 2024040300 this plugin was completely refactored to support more reports and modules.
In addition the report now loads in a tabbed format instead of in different locations.

Each report is now a subplugin within the report directory
The subplugins report class should extend from the \local_assessfreq\report_base class

Capability checks were reworked to be relative to the location that they are being loading from. The initial version
has the following capabilities:

• local/assessfreq:view
• assessfreqreport/activity_dashboard:view
• assessfreqreport/activities_in_progress:view
• assessfreqreport/heatmap:view
• assessfreqreport/summary_graphs:view

however each future subplugin can define their own access checks by using the abstract has_access method.
Accessing the reports from a course (link now added to the course context menu under reports) will do the capability check at the
course context level, otherwise system level will be used.

The reports themselves should also be restricted based on the $PAGE->course if it is not the SITEID as this is set
during the intial load of the index.php file.

Each module is now a subplugin within the source directory
The subplugins source class should extend from the \local_assessfreq\source_base class

[dmitriim]

Hi @SimonThornett
Very exciting changes. However, can you please apply the changes to the latest branch of the plugin first MOODLE_403_STABLE and then backport as required to later versions?