[Tavern] Post-MVP Refactor

[KCarretto]

What type of PR is this?

/kind cleanup
/kind api-change

What this PR does / why we need it:

Implements some features based on #144

• Requires Agent to send hostPlatform during claim tasks mutation
• Enables Agent to send hostPrimaryIP during claim tasks mutation (if available)
• Renames tome.parameters to tome.paramdefs
• Overhauled Tavern Authentication, especially for when authentication is disabled
• Added Creator edge to jobs (if available)
• Updates Environment configuration, enabled DB Limits to be set via environment variables

Which issue(s) this PR fixes:

Fixes #132
Fixes #133
Fixes #134
Fixes #136

[codecov]

Codecov Report

Merging #147 (fa13d24) into main (33d4eff) will increase coverage by 2.02%.
The diff coverage is 57.62%.

@@            Coverage Diff             @@
##             main     #147      +/-   ##
==========================================
+ Coverage   54.15%   56.17%   +2.02%     
==========================================
  Files          27       28       +1     
  Lines        1313     1376      +63     
==========================================
+ Hits          711      773      +62     
+ Misses        531      522       -9     
- Partials       71       81      +10     

Impacted Files	Coverage Δ
tavern/auth/context.go	0.00% <0.00%> (ø)
tavern/auth/middleware.go	0.00% <0.00%> (ø)
tavern/graphql/ent.resolvers.go	20.00% <ø> (ø)
tavern/graphql/mutation.resolvers.go	62.26% <ø> (+2.26%)	⬆️
tavern/graphql/query.resolvers.go	33.33% <ø> (ø)
tavern/ent/schema/job.go	36.17% <14.28%> (-5.30%)	⬇️
tavern/env.go	63.15% <63.15%> (ø)
tavern/config.go	65.68% <66.66%> (+27.68%)	⬆️
tavern/app.go	56.52% <100.00%> (-0.38%)	⬇️
tavern/auth/oauth.go	66.66% <100.00%> (ø)
... and 6 more

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[hulto]

lgtm