Serve current documents

[n-dusan]

• [x] Traverse and parse Stelae archive
  • [x] Load dependencies.json
  • [x] Load repositories.json
  • [x] Load from individual stele
• [x] Dynamically create Actix scopes and routes for each stele
  • [x] Add scopes and routes data to repositories.json
  • [x] Traverse stelae
  • [x] Create dynamic scopes and routes
    • [x] For root stele
    • [x] append underscore scopes to parent routes
    • [x] Add fallback repository if request in repository not found
    • [x] resolve path in serve method that excludes _rdf, _xml, _uncodified_xml
    • [x] append underscore routes to parent scope
    • [x] pass in root stele, differentiate root stele
    • [x] For children stele
  • [x] Add Stele data to Actix AppState
• [x] #29
  • [x] Set up fixtures with repositories.json and dependencies.json
  • [x] Use actix integration tests to confirm that dynamic routes are resolved
• [x] #31
• [x] Use bare repositories in testing framework
• [ ] Make Archive init faster by using references
• [x] Clean up current implementation by moving to separate, documented functions