feat(bmr): verify blocks received from chain in bmr to ensure blocks received are part of the canonical chain

[MuhammedIrfan]

Closes #585

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have documented my code in accordance with the documentation guidelines
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have run the unit tests
• [x] I only have one commit (if not, squash them into one commit).
• [x] I have a descriptive commit message that adheres to the commit message guidelines

Please review the CONTRIBUTING.md file for detailed contributing guidelines.

[codecov[bot]]

Codecov Report

Merging #807 (393eb64) into main (79537e7) will increase coverage by 0.34%. The diff coverage is 68.30%.

@@             Coverage Diff              @@
##               main     #807      +/-   ##
============================================
+ Coverage     38.20%   38.55%   +0.34%     
  Complexity      801      801              
============================================
  Files           115      116       +1     
  Lines         11161    11327     +166     
  Branches        941      941              
============================================
+ Hits           4264     4367     +103     
- Misses         6579     6625      +46     
- Partials        318      335      +17     

Impacted Files	Coverage Δ
cmd/iconbridge/chain/near/api.go	0.00% <0.00%> (ø)
cmd/iconbridge/chain/near/verifier.go	66.95% <66.95%> (ø)
cmd/iconbridge/chain/near/client.go	66.42% <68.75%> (-1.53%)	:arrow_down:
cmd/iconbridge/chain/near/receiver.go	77.44% <75.00%> (-6.90%)	:arrow_down: