feat: add support for embedded etcd

[vishal-chdhry]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 199 lines in your changes missing coverage. Please review.

Project coverage is 0.00%. Comparing base (c0d75ef) to head (1559465).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/storage/etcd/store.go	0.00%	138 Missing ⚠️
pkg/storage/etcd/new.go	0.00%	31 Missing ⚠️
pkg/storage/store.go	0.00%	15 Missing ⚠️
pkg/app/opts/options.go	0.00%	8 Missing ⚠️
pkg/server/config.go	0.00%	7 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff           @@
##            main    #213    +/-   ##
======================================
  Coverage   0.00%   0.00%            
======================================
  Files         30      32     +2     
  Lines      17670   18611   +941     
======================================
- Misses     17670   18611   +941     

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