Updates integrating with ethconnect

[peterbroadhurst]

These are a set of additional changes on top of #2 as I work through additional scenarios.

Corresponding changes in EthConnect are in PR hyperledger/firefly-ethconnect#213

[awrichar]

👍 Looks good to me

[codecov-commenter]

Codecov Report

Merging #3 (8c3f9e0) into main (4b8046d) will decrease coverage by 2.02%.
The diff coverage is 66.66%.

@@             Coverage Diff             @@
##              main       #3      +/-   ##
===========================================
- Coverage   100.00%   97.97%   -2.03%     
===========================================
  Files           14       14              
  Lines          910      938      +28     
===========================================
+ Hits           910      919       +9     
- Misses           0       17      +17     
- Partials         0        2       +2     

Impacted Files	Coverage Δ
internal/confirmations/confirmations.go	100.00% <ø> (ø)
internal/manager/manager.go	90.15% <37.93%> (-9.85%)	⬇️
cmd/fftm.go	100.00% <100.00%> (ø)
internal/manager/ffcore.go	100.00% <100.00%> (ø)
internal/manager/receipts.go	100.00% <100.00%> (ø)
internal/manager/routes.go	100.00% <100.00%> (ø)
internal/policyengines/simple/config.go	100.00% <100.00%> (ø)
...ernal/policyengines/simple/simple_policy_engine.go	100.00% <100.00%> (ø)
internal/tmconfig/tmconfig.go	100.00% <100.00%> (ø)

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