Separate plugins controller.
Add ui pattern for outdated plugins and the plugin that is not supported current vrct version but supported in newest vrct version.
Fix handling flag 'is_latest_version_already' that was overrode unexpectedly.
Add some patterns to plugin list. it shows update-able if the user update vrct.
Add auto update function if the plugin is enabled.
Add safety that turn to disable the plugin if it's not supported with current vrct version.
Update: Add functions and test ui.
Update, backend: send latest vrct version to frontend.
Refactor: Change the plugins data structure.
bugfix: fix endless showing update button.
Refactor some functions.
Try to fetch functions from github api just once when vrct started.(It used to every time plugin tab has opened so easy to reach to the api limit)
