feat(config): simplify config loading

[mask-pp]

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[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (d7a1932) 56.76% compared to head (2a99810) 56.50%.
Report is 1 commits behind head on main.

❗ Current head 2a99810 differs from pull request most recent head 3b81fb3. Consider uploading reports for the commit 3b81fb3 to get more accurate results

Files	Patch %	Lines
proposer/proposer.go	76.92%	3 Missing and 3 partials ⚠️
driver/driver.go	66.66%	0 Missing and 2 partials ⚠️
pkg/rpc/client.go	77.77%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #507      +/-   ##
==========================================
- Coverage   56.76%   56.50%   -0.26%     
==========================================
  Files          44       44              
  Lines        5634     5578      -56     
==========================================
- Hits         3198     3152      -46     
+ Misses       2111     2103       -8     
+ Partials      325      323       -2     

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