GTF support for new tx types

[Dentosal]

From Slack:

I don't see a GTF opcode defined to get the witnessesCount, witnesses, outputs, outputsCount, inputs, and inputsCount for TransactionUpgrade, TransactionUpload, and TransactionBlob in the specs as well as transaction specific types such as subsectionIndex, subsectionsNumber, root, witnessIndex, proofSetCount, and proofSet in TransactionUpload.

This is blocking FuelLabs/sway#6500

[xgreenx]

Also, it seems that we have a different getter for each type of transaction. I think we just need to have one getter for all types. And if the transaction doesn't support it, return an error like in the case of Mint transaction.