Tink Server rewrite for v1alpha2

[chrisdoherty4]

To be written

[mergify]

⚠️ The sha of the head commit of this PR conflicts with #763. Mergify cannot evaluate rules on this PR. ⚠️

[codecov]

Codecov Report

Merging #765 (ce686a5) into main (f20a793) will increase coverage by 0.20%.
The diff coverage is n/a.

❗ Current head ce686a5 differs from pull request most recent head bdd2ec7. Consider uploading reports for the commit bdd2ec7 to get more accurate results

@@            Coverage Diff             @@
##             main     #765      +/-   ##
==========================================
+ Coverage   51.70%   51.90%   +0.20%     
==========================================
  Files          32       32              
  Lines        1441     1441              
==========================================
+ Hits          745      748       +3     
+ Misses        655      650       -5     
- Partials       41       43       +2     

Impacted Files	Coverage Δ
internal/agent/agent.go	62.96% <ø> (ø)
internal/agent/mock.go	24.44% <ø> (ø)
internal/agent/run.go	83.67% <ø> (ø)
internal/agent/runtime/docker.go	65.93% <ø> (+3.29%)	⬆️
internal/agent/runtime/fake.go	0.00% <ø> (ø)
internal/agent/transport/fake.go	0.00% <ø> (ø)
internal/agent/transport/grpc.go	23.85% <ø> (ø)
internal/agent/transport/mock.go	52.38% <ø> (ø)
internal/obsolete/server/index.go	100.00% <ø> (ø)
internal/obsolete/server/kubernetes_api.go	0.00% <ø> (ø)
... and 5 more

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