Refactor and redesign Plugin Installer

[anjaldoshi]

• Updated PluginListBoxComponent to inherit from TableListBoxModel instead of ListBoxModel. This enables a richer table-based UI with sortable columns, tooltips, and the ability to view plugin details without clicking into each item individually.
• Added SVG-based icons for install, upgrade, downgrade, and delete actions to provide clearer user feedback.
• Split and simplified PluginInfoComponent. Plugin install and uninstall actions are now handled by a new PluginInstallActionRunner class.
• Added support for plugin search, making it easier to find and manage plugins.
• Updated PluginInstallerComponent to use std::unique_ptr for improved memory safety.