feat: script to add market-authority to genesis

[nivasan1]

In This PR

• I introduce changes to the genesis.sh script to permit us to add signer accounts as a genesis-account, and as a market-authority.
• Specifically, GENESIS_ACCOUNT_{0-9} environment variables will be consumed + corresponding accounts will be created w/ GENESIS_ACCOUNT_{0-9}_BALANCE when executing make build-configs

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.43%. Comparing base (3ff5fbe) to head (ea80e2f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #608   +/-   ##
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  Coverage   56.43%   56.43%           
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  Files         249      249           
  Lines       12890    12890           
=======================================
  Hits         7275     7275           
  Misses       4909     4909           
  Partials      706      706           

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