Improvement suggestions

[Aniket-Engg]

• Running ls command doesn't seem required https://github.com/EthereumRemix/sol-test/blob/main/src/index.ts#L11
• npm init is not required to install a module globally https://github.com/EthereumRemix/sol-test/blob/main/src/index.ts#L24
• Support other options along with compiler-version . All options are:

 -c, --compiler <string>  set compiler version (e.g: 0.6.1, 0.7.1 etc)
  -e, --evm <string>       set EVM version (e.g: petersburg, istanbul etc)
  -o, --optimize <bool>    enable/disable optimization
  -r, --runs <number>      set runs (e.g: 150, 250 etc)

• Update readme to explain the options and their usage in job configuration
• Just to add, it seems working fine without this step:

name: Environment Setup
        uses: actions/setup-node@v3
        with:
          node-version: 14.17.6

If that is not required, readme can be updated.