feat(configuration-generator): support secrets file

[oXtxNt9U]

Summary

Makes it possible to pass explicit mnemonics when generating network configs

pnpm run mainsail config:generate --network devnet --token TEST --symbol TES --chainId 1000 --secretsFile ./secrets.json --validators 3 --force

# secrets.json

{
  "genesisMnemonic": "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo wrong",
  "validatorMnemonics": [
    "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
    "legal winner thank year wave sausage worth useful legal winner thank yellow",
    "letter advice cage absurd amount doctor acoustic avoid letter advice cage above"
  ]
}

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.12%. Comparing base (50eb6a7) to head (3fa16d4).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1409      +/-   ##
===========================================
+ Coverage    74.42%   75.12%   +0.70%     
===========================================
  Files          927      938      +11     
  Lines        15284    15773     +489     
  Branches      1701     1805     +104     
===========================================
+ Hits         11375    11850     +475     
- Misses        3904     3916      +12     
- Partials         5        7       +2     

Flag	Coverage Δ
contracts	96.98% <ø> (?)
packages	74.46% <100.00%> (+0.04%)	⬆️

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

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.