Implement ResourcePath type

[dragonzkiller]

Closes #1062
Closes #1130

Implemented:

• all DepotPaths are now a new ResourcePath type rather than CName to ensure files are properly hashed before loading into the game
  • all paths are properly sanitized before being hashed (essentially the same as in RED4Ext )
  • RedRefEditor is now based on ResourcePath enabling hashes written to CR2W files to be properly sanitized
• ChunkViewModel will now display hashes and guessed extensions for files without a resolved path
• ChunkViewModel will now add hashes for raRefs that have a DepotPath and a hash, but are not loaded into the HashService as user hashes. This does a few additional things:
  • When adding a file view the tree view, ChunkViewModel will now place files in the project with their resolved paths even if they didn't previously have a hash in HashService
  • Open in new tab in ChunkViewModel will now open the tab with the resolved name and/or extension (rather than 1234.....bin)

Fixed:

• User and project hashes are written upon application exit. These hashes are loaded into HashService upon application start
• Properties View will now display file hashes for top level files with the same logic used when packing the actual archive

Notes:

• ChunkViewModel will only add hashes if the tree view is expanded to a raRef, it doesn't currently scan the entire file upon opening
• As a path must be resolved, if a user opens a files and sees a raRef that is displaying only the hash, adding the file will still only use the hash and guessed file extension and be placed in the root directory. It might be possible to scan for such files and rename accordingly at a later date

[seberoth]

lgtm