feat(relayer): prepare bridge relayer API for frontend

[cyberhorsey]

Relayer API should be used to query for bridging events, and then merge with frontends localsTorage, so bridging events persist across devices.

This PR provides necessary information for the frontend to be able to know which event type it is dealing with, and contain the same info as the localStorage events.

[codecov]

Codecov Report

Merging #13124 (1d20b4d) into main (675611d) will decrease coverage by 0.89%.
The diff coverage is 45.07%.

@@            Coverage Diff             @@
##             main   #13124      +/-   ##
==========================================
- Coverage   62.79%   61.91%   -0.89%     
==========================================
  Files         113      114       +1     
  Lines        3209     3337     +128     
  Branches      434      434              
==========================================
+ Hits         2015     2066      +51     
- Misses       1118     1189      +71     
- Partials       76       82       +6     

Flag	Coverage Δ		*Carryforward flag
bridge-ui	92.61% <ø> (ø)		Carriedforward from 675611d
protocol	53.23% <ø> (ø)		Carriedforward from 675611d
relayer	66.22% <45.07%> (-2.94%)	⬇️
ui	100.00% <ø> (ø)		Carriedforward from 675611d

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

Impacted Files	Coverage Δ
packages/relayer/http/get_block_info.go	0.00% <0.00%> (ø)
packages/relayer/cli/cli.go	58.07% <26.31%> (-4.38%)	⬇️
packages/relayer/indexer/handle_event.go	57.14% <59.64%> (+5.62%)	⬆️
packages/relayer/http/routes.go	100.00% <100.00%> (ø)
packages/relayer/http/server.go	96.47% <100.00%> (+0.58%)	⬆️
packages/relayer/repo/event.go	76.00% <100.00%> (+3.27%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more