Capture frozen resources for publication

[mmccool]

• Capture resources in publication directory (under 6-resources, parallel to 6-rec)
• Copy over resources
• Update links: replace github links with final URLs
• Removed executable permissions for discovery-core.jsonld (in original context directory also)

Discuss:

• Should the github URL in discovery-ontology.ttl be "discovery#" or "discovery-ontology#"? There are three --- do we change them all to the same thing? (RESOLVED - should be discovery-ontology, also in context files)
• Update TD URLs? Currently "td" prefix points at TD 1.0 URL , e.g. 2019 (RESOLVED - not changed, since TD 1.0 and TD 1.1 are supposed to be backward compatible, updating in place)
• Remove ^M line-endings? Files seem to use Windows line-ending. Unfortunately edits above resulted in mixed line endings, files should at least be consistent. (RESOLVED: change to use Windows line endings, with CR-LF).
• Should we explicitly specify UTF-8 encoding? (RESOLVED: specify UTF-8)
• How do we test these changes? Process: publish, test (Andrea will do; test Thing, Directory, and DID Document), bug-fix (in wot-resources)

NOTE: github is not showing a diff since the copied files are "new", you have to use diff on the command line to see what changed. In particular:

$ diff context/discovery-ontology.ttl publication/6-rec/resources/v1/discovery-ontology.ttl 
9c9
< @prefix discovery: <https://github.com/w3c/wot-discovery#> .
---
> @prefix discovery: <https://www.w3.org/2021/wot/discovery#> .
13c13
< @base <https://github.com/w3c/wot-discovery#> .
---
> @base <https://www.w3.org/2021/wot/discovery#> .
15c15
< <https://github.com/w3c/wot-discovery#> rdf:type owl:Ontology ;
---
> <https://www.w3.org/2021/wot/discovery#> rdf:type owl:Ontology ;