fix(database)!: use transactions tied to repo counters for hook and build to avoid collisions

[ecrupper]

I hesitate to say "fixes" for go-vela/community#997 and go-vela/community#213 because at very very high concurrency (300 simultaneous webhooks for one repo), it's still possible to see this issue I noticed. However, these changes can handle a great deal more concurrency compared to main.

In my testing, I was able to send 30+ webhooks simultaneously and 300+ with a .25 second delay and not run into duplicate key issues.

The key difference here is removing fetches for counters and instead tying the repo counters to the create functions for hooks and builds.

This PR also forces the worker's substitution routine to play a critical role in rendering any env vars containing the build number. This breaks situations in templates when teams use those specific Vela platform vars in a sprig func like

{{ vela "BUILD_NUMBER" }}

This should really just be ${VELA_BUILD_NUMBER}, but if a user is — for whatever reason — performing some sort of inline Go logic based on build number, this would be a regression for them.

[codecov]

Codecov Report

❌ Patch coverage is 42.01681% with 69 lines in your changes missing coverage. Please review.
✅ Project coverage is 58.29%. Comparing base (68f292d) to head (fa5ab7a).

Files with missing lines	Patch %	Lines
api/build/compile_publish.go	0.00%	23 Missing ⚠️
api/webhook/post.go	0.00%	8 Missing ⚠️
database/build/create.go	65.21%	4 Missing and 4 partials ⚠️
database/hook/create.go	65.21%	4 Missing and 4 partials ⚠️
api/build/plan.go	0.00%	5 Missing ⚠️
api/types/repo.go	60.00%	2 Missing and 2 partials ⚠️
api/repo/repair.go	0.00%	3 Missing ⚠️
scm/github/app_install.go	0.00%	3 Missing ⚠️
scm/github/repo.go	77.77%	1 Missing and 1 partial ⚠️
api/repo/create.go	0.00%	1 Missing ⚠️
... and 4 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1353      +/-   ##
==========================================
+ Coverage   58.09%   58.29%   +0.19%     
==========================================
  Files         634      633       -1     
  Lines       24577    24506      -71     
==========================================
+ Hits        14278    14285       +7     
+ Misses       9651     9565      -86     
- Partials      648      656       +8     

Files with missing lines	Coverage Δ
api/hook/create.go	0.00% <ø> (ø)
api/types/build.go	98.10% <100.00%> (+<0.01%)	⬆️
database/repo/table.go	100.00% <ø> (ø)
database/types/repo.go	88.88% <100.00%> (+0.13%)	⬆️
mock/server/repo.go	0.00% <ø> (ø)
api/repo/create.go	0.00% <0.00%> (ø)
api/repo/update.go	0.00% <0.00%> (ø)
api/scm/sync.go	0.00% <0.00%> (ø)
api/scm/sync_org.go	0.00% <0.00%> (ø)
database/testutils/api_resources.go	0.00% <0.00%> (ø)
... and 9 more

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