feat(bts): implement storage deposit

[shreyasbhat0]

Closes #569

Checklist:

• [x] I have performed a self-review of my own code
• [ ] 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).
• [ ] 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 #774 (4640701) into main (d505927) will increase coverage by 0.13%. The diff coverage is n/a.

@@             Coverage Diff              @@
##               main     #774      +/-   ##
============================================
+ Coverage     38.07%   38.20%   +0.13%     
  Complexity      801      801              
============================================
  Files           115      115              
  Lines         11152    11161       +9     
  Branches        941      941              
============================================
+ Hits           4246     4264      +18     
+ Misses         6585     6579       -6     
+ Partials        321      318       -3     

Impacted Files	Coverage Δ
cmd/iconbridge/chain/near/client.go	67.95% <0.00%> (+2.01%)	:arrow_up:
cmd/iconbridge/chain/near/receiver.go	84.33% <0.00%> (+7.50%)	:arrow_up: