Add support for v4 auto-converted resources, other v4 updates

[nikitalita]

• Add support for converting v4 remapped auto-converted resources
  • v4 finally fixed auto-converting resources from text to binary upon export, so now we support converting them back
  • adds ImportInfoRemap, support in GDRESettings for manipulating v3-v4 remaps
• fix decompile errors with no code files
• Update resource loader compat to bin format 5
• fix escn export
• fix scene property variant writing
• fix int64/float64 writing
• Add support reading/writing 4.x variant types in bin
• Add support for v4 remapped auto-convert resources