fix: Convert all jobs to use a common resource and agent type

[kylecarbs]

This enables a consistent API for project import and provisioned resources.

[codecov]

Codecov Report

Merging #369 (76fe3d9) into main (2d6804c) will decrease coverage by 0.49%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main     #369      +/-   ##
==========================================
- Coverage   68.27%   67.77%   -0.50%     
==========================================
  Files         150      150              
  Lines        8274     8333      +59     
  Branches       72       72              
==========================================
- Hits         5649     5648       -1     
- Misses       2057     2107      +50     
- Partials      568      578      +10     

Flag	Coverage Δ
unittest-go-macos-latest	?
unittest-go-ubuntu-latest	67.71% <50.00%> (-0.28%)	⬇️
unittest-go-windows-2022	65.69% <50.00%> (-0.34%)	⬇️
unittest-js	66.10% <ø> (ø)

Impacted Files	Coverage Δ
coderd/provisionerjobs.go	60.10% <ø> (ø)
codersdk/files.go	76.92% <ø> (+10.25%)	⬆️
coderd/workspaceagent.go	37.36% <18.91%> (-15.27%)	⬇️
coderd/projectimport.go	59.39% <50.00%> (ø)
codersdk/projectimport.go	64.40% <50.00%> (ø)
coderd/provisionerdaemons.go	59.69% <70.37%> (-0.82%)	⬇️
cli/projects.go	72.58% <100.00%> (-4.84%)	⬇️
peer/conn.go	76.47% <0.00%> (-3.33%)	⬇️
peerbroker/proxy.go	55.97% <0.00%> (-1.26%)	⬇️
... and 1 more

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[bryphe-coder]

Looks good to me - thanks for this refactoring!