Fixes #32893 - use setting DSL for General category

This uses our new DSL to define the General settings, this showcases how
to use the new DSL and other categories should follow in the same
release.

Fixes #33419 - Introduce Fact Parser Registry

FactParser class has two purposes in current codebase. It acts as parent
for other fact parses (PuppetFactParser, AnsibleFactParser,
RhsmFactParser...) and also as a registry for registering parsers for
given type/key. This PR introduces FactParserRegistry under...

Fixes #32403 - Add validations to a setting DSL

Add ability to define validation per Setting through DSL.
It tries to keep similar syntax to rails model validations.

Fixes #33387 - Remove view_tasks permission

This permission was present since the permission model was implemented
in acfbc45886c4 but wasn't really used anywhere. Foreman tasks uses a
different `view_foreman_tasks` permission.

Fixes #31638 - Adds host status overview page

Fixes #31444 - Add host's statuses to the details page

Fixes #31129 - drop Host classes API

Extracted in: https://github.com/theforeman/foreman_puppet_enc/pull/103

Fixes #30170 - drop smart class param permissions

Extraction details in https://github.com/theforeman/foreman_puppet_enc/pull/27
Forgotten Site Manager permissions in https://github.com/theforeman/foreman_puppet_enc/pull/95

Fixes #31661 - drop externalNodes from host controller

Removes the node export from HostController.

Extracted in theforeman/foreman_puppet_enc#93.

Fixes #31061 - drop Environment permissions

Extracted in https://github.com/theforeman/foreman_puppet_enc/pull/47
Adding to default role in: https://github.com/theforeman/foreman_puppet_enc/pull/77