Plot System Integration

[MineFact]

• Convert PlotSystemTerra into AlpsLib
• Make PlotSystemTerra an empty plugin with just using AlpsLib as dependency
• Integrate PlotSystemTerra from AlpsLib into the PlotSystem BuildTeamTools Module
• Add Multiversion Support for AlpsLib PlotSystemTerra
• Fix custom heads in CreatePlotMenu
• Change schematic folder to /modules/plotsystem/schematics
• Make SFTP debug messages debug mode only (not possible to solve for me on first look)
• Check if Schematic Auto-Pasting works
• Test Multiversion Support in AlpsLib PlotSystemTerra
  • Test all features for 1.20.4 with BuildTeamTools
    • Test /createplot and schematic upload
    • Test successful plot creation on PlotSystem Server --> Not testable because PlotServer is 1.12.2 but should be fine.
    • Test /pasteplot and schematic download
    • Test successful plot creation on BuildTeam Server
  • Test all features for 1.12.2 with BuildTeamTools
    • Test /createplot and schematic upload
    • Test successful plot creation on PlotSystem Server
    • Test /pasteplot and schematic download
    • Test successful plot creation on BuildTeam Server
  • Test all features for 1.20.4 with PlotSystemTerra
    • Test /createplot and schematic upload
    • Test successful plot creation on PlotSystem Server --> Not testable because PlotServer is 1.12.2 but should be fine.
    • Test /pasteplot and schematic download
    • Test successful plot creation on BuildTeam Server
  • Test all features for 1.12.2 with PlotSystemTerra
    • Test /createplot and schematic upload
    • Test successful plot creation on PlotSystem Server
    • Test /pasteplot and schematic download
    • Test successful plot creation on BuildTeam Server
• Update to Plot System v5
• Force Alps Dev's to also use and update the library for now

[kyanvde]

@MineFact Could you update the status of this issue when you have time?