Add deneb support for type conversions

[avalonche]

📝 Summary

⛱ Motivation and Context

📚 References

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✅ I have run these commands

• make lint
• make test-race
• go mod tidy
• I have seen and agree to CONTRIBUTING.md

[codecov-commenter]

Codecov Report

Merging #496 (b4c6f26) into deneb-signature-checks (af69cf5) will increase coverage by 0.22%.
The diff coverage is 3.00%.

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@@                    Coverage Diff                     @@
##           deneb-signature-checks     #496      +/-   ##
==========================================================
+ Coverage                   33.43%   33.66%   +0.22%     
==========================================================
  Files                          24       24              
  Lines                        4728     4874     +146     
==========================================================
+ Hits                         1581     1641      +60     
- Misses                       2935     3009      +74     
- Partials                      212      224      +12     

Flag	Coverage Δ
unittests	33.66% <3.00%> (+0.22%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
common/types_spec.go	17.16% <0.00%> (-4.07%)	⬇️
common/utils.go	29.77% <0.00%> (+17.18%)	⬆️
datastore/memcached.go	0.00% <0.00%> (ø)
services/api/service.go	36.22% <0.00%> (+0.36%)	⬆️
services/api/utils.go	18.42% <0.00%> (-14.40%)	⬇️
database/typesconv.go	27.83% <20.00%> (-3.75%)	⬇️
datastore/redis.go	59.00% <66.66%> (ø)
datastore/datastore.go	17.60% <100.00%> (ø)