feat(eventindexer): ProposeEvents filtering, API exposing, and getting count by address/event + tests

[cyberhorsey]

This Pr enhances functionality in our eventindexer to prepare for alpha-3.

It:

• adds BlockProposed events filtering
• exposes API endpoint for status page to show unique block proposed addresses
• adds proposed blocks to status page, consuming above endpoint, and adding modal to view
• exposes API endpoint for individual addresses, to see how many blocks they have proposed or proven (which will be used for the local node status page coming up in a future PR)
• adds large missing test coverage, since this service was written quickly for alpha-2 to stem the flow of "How many different people have proven blocks" question, by adding blockProven to status page.

[codecov]

Codecov Report

Merging #13624 (a53dff4) into main (43247d3) will increase coverage by 2.19%.
The diff coverage is 73.91%.

❗ Current head a53dff4 differs from pull request most recent head 897a72f. Consider uploading reports for the commit 897a72f to get more accurate results

@@            Coverage Diff             @@
##             main   #13624      +/-   ##
==========================================
+ Coverage   36.67%   38.86%   +2.19%     
==========================================
  Files         127      133       +6     
  Lines        3815     4006     +191     
  Branches      508      504       -4     
==========================================
+ Hits         1399     1557     +158     
- Misses       2324     2345      +21     
- Partials       92      104      +12     

Flag	Coverage Δ		*Carryforward flag
bridge-ui	94.55% <ø> (+0.54%)	⬆️	Carriedforward from c011f84
eventindexer	82.08% <73.91%> (∅)
protocol	0.00% <ø> (ø)		Carriedforward from c011f84
relayer	62.53% <ø> (ø)		Carriedforward from c011f84
ui	100.00% <ø> (ø)		Carriedforward from c011f84

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

Impacted Files	Coverage Δ
packages/eventindexer/repo/event.go	69.38% <71.42%> (ø)
packages/eventindexer/http/get_unique_proposers.go	72.72% <72.72%> (ø)
...ventindexer/http/get_count_by_address_and_event.go	75.00% <75.00%> (ø)
packages/eventindexer/http/routes.go	100.00% <100.00%> (ø)

... and 4 files with indirect coverage changes

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