migrate typechain to have a single file comprising all the fns available for a contract

[goastler]

[goastler]

at the moment these are duplicated over "queries" and "tx". It should just be one file, call as appropriate. fns which are a tx should have some kind of gas associated in the params, whereas queries shouldn't

[HughParry]

What is the status of typechain problems like this?

[HughParry]

@forgetso Please add this under the epic for typechain proposal

[HughParry]

Refinement ^^^