Compatability: Mission-specific hooks

[leklachu]

There are several features in vanilla that are referenced by the mission name, that can break if e.g. FW missions are reworked. If this plugin were to become part of vanilla, those hooks should be amended to generic events or stored data that represents actually what's being queried.

Such changes could be helpful in vanilla anyway, to make it more robust for other plugins and for future vanilla content.

There are some notes of these in the Notes files in the plugin.