dbworker: Add tracing and metrics

Created by: efritz

Created by: codecov[bot]

Codecov Report

Merging #16817 (e16a44e) into main (bfff635) will increase coverage by 0.03%. The diff coverage is 96.36%.

@@            Coverage Diff             @@
##             main   #16817      +/-   ##
==========================================
+ Coverage   52.49%   52.52%   +0.03%     
==========================================
  Files        1703     1704       +1     
  Lines       84831    84884      +53     
  Branches     7606     7606              
==========================================
+ Hits        44530    44584      +54     
  Misses      36401    36401              
+ Partials     3900     3899       -1     

Flag	Coverage Δ		*Carryforward flag
go	51.74% <96.36%> (+0.04%)
integration	29.69% <ø> (ø)		Carriedforward from bfff635
storybook	28.77% <ø> (ø)		Carriedforward from bfff635
typescript	54.38% <ø> (ø)		Carriedforward from bfff635
unit	34.99% <ø> (ø)		Carriedforward from bfff635

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
internal/workerutil/dbworker/store/store.go	75.31% <94.11%> (+5.47%)
...nternal/workerutil/dbworker/store/observability.go	100.00% <100.00%> (ø)
.../internal/codeintel/resolvers/graphql/locations.go	85.56% <0.00%> (+2.06%)