🛠 Add Tests for `_requireSuccessfulContractInitialisation` and `_parseSalt`

[pcaversaccio]

🕓 Changelog

• Adds fuzz tests (unit tests are not required IMO) for _requireSuccessfulContractInitialisation and _parseSalt.
• Partially addresses https://github.com/pcaversaccio/createx/issues/10.
• Furthermore, I quickly abused this PR to add three additional network configurations mantaMain, shardeumTestnet, and artheraTestnet, and bump some dependencies.
• The .editorconfig .tree configuration I copied from here.
• The LICENSE of the tests are changed to MIT.

PR Checklist

• [ ] Because this PR includes a bug fix, relevant tests have been included.
• [x] Because this PR includes a new feature, the change was previously discussed in an issue or in the discussions section. (See https://github.com/pcaversaccio/createx/issues/10.)
• [ ] I didn't do anything of this.

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