Introduced FCP_Legion_Enlistment_Options.xml to define enlistment, missions, salary, provisions, storage, work, bounty, resign, and reinforcement options for Caesar's Legion. Enabled Legion enlistment in FCP_Legion.xml by uncommenting and configuring the relevant mod extension. Added English localization for all new enlistment-related UI and gameplay text in FCP_Legion_Enlistment.xml.
