Fix/tx builder fetcher logic

[twwu123]

Summary

Currently it is practically impossible to build a transaction completely offline, because there is no API to provide script ref size for inputs. I have added this in the txIn type, and added logic to get rid of the need for a fetcher. The current txBuilder will add any inputs with refScriptSize also to the refTxIn so that the txBuilder correctly accounts for these script sizes when calculating fees. It is somewhat of a hacky fix, but will work until we figure out a better method.

Affect components

Please indicate which part of the Mesh Repo

• [x] @meshsdk/common
• [ ] @meshsdk/contract
• [ ] @meshsdk/core
• [ ] @meshsdk/core-csl
• [ ] @meshsdk/core-cst
• [ ] @meshsdk/provider
• [ ] @meshsdk/react
• [x] @meshsdk/transaction
• [ ] @meshsdk/wallet
• [ ] Mesh playground (i.e. https://meshjs.dev/)
• [ ] Mesh CLI

Type of Change

Please mark the relevant option(s) for your pull request:

• [ ] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] Code refactoring (improving code quality without changing its behavior)
• [ ] Documentation update (adding or updating documentation related to the project)

Related Issues

Closes #374

Checklist

Please ensure that your pull request meets the following criteria:

• [x] My code is appropriately commented and includes relevant documentation, if necessary
• [x] I have added tests to cover my changes, if necessary
• [x] I have updated the documentation, if necessary
• [x] All new and existing tests pass (i.e. npm run test)
• [x] The build is pass (i.e. npm run build)

Additional context

Now offline transaction building requires an extra input for scriptRefSize, if there is no scriptRef at the input, please explicitly put 0 as scriptRefSize. If it is left undefined, it is assumed to be an incomplete input info, and will require a fetcher instance.

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