AddInReissuance various fix and improvements

[louisinger]

• various fixes in AddInReissuance
• AddInReissuance does not add the input anymore (choose a valid input)
• AddInIssuance now needs an input index
• add a blinded reissuance integration test using psetv2 pkg

it closes #213

@altafan please review

[altafan]

@louisinger since #211 got merged, we can now update the BlindOutputs() function of the zkp generator and remove the issuanceBlidningArgs argument.

Since the spec states that in case an input has an issuance, it has to consider to be blinded if the blinded issuance flag is true OR UNDEFINED, I think it's worth adding a utility method IsIssuanceBlinded() to the partial input that makes sure to always return the correct value following the spec recommendation.

We would then use that function in BlindOutputs to know if an issuance is blinded and compute the correct token asset hash.

[louisinger]

add also fix to: #213 + several new tests cases