surface URI as parameter for token mint

[shorsher]

These changes also include added an optional config parameter, that is passed to directly to the token connectors without validation.

[codecov-commenter]

Codecov Report

Merging #879 (04cd951) into main (52e7744) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #879   +/-   ##
=======================================
  Coverage   99.96%   99.96%           
=======================================
  Files         299      299           
  Lines       19500    19501    +1     
=======================================
+ Hits        19494    19495    +1     
  Misses          5        5           
  Partials        1        1           

Impacted Files	Coverage Δ
internal/tokens/fftokens/fftokens.go	99.55% <100.00%> (+<0.01%)	⬆️

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[shorsher]

This is a good candidate for a 1.0.3 release.

[peterbroadhurst]

Really like the approach that for uri we use the fully API modeled field to allow it to be set on mint.

I note that for other actions (pool creation, approval) we have an opaque config that is passed through FireFly to the Token connector, allowing extensibility without needing to change Core.

Feels like to avoid needing future changes in Core for other things that might need to be customized on mint/burn/transfer, we should add a similar pass-through field now?

Would you mind adding that into this PR before we merge?

[peterbroadhurst]

Thanks for adding that @shorsher