Add metadata discovery & resolution paths to escrow contracts

[sisyphusSmiling]

Closes:  #112 cc: @bjartek
Related: #99

ℹ️ Cadence CI seems to be failing on CLI install because there was a recent release of Flow CLI which isn't yet available. I'll run CI again after some time to confirm passing tests.

Description

• Enhances error messages in escrow contracts & scripts
• Adds the ability to discover supported metadata views from NFTs in locked in escrow
• Adds supporting scripts for new and existing escrow functionality

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For contributor use:

• Targeted PR against main branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the standards mentioned here.
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[joshuahannan]

Beautiful error messages! 👏 🥳

[bjartek]

Would it be possible to have a method here to get do the two following things?

https://github.com/onflow/flow-nft/blob/0ce4125dcb5c351c64706edd5b210d1e22691ef5/contracts/NonFungibleToken.cdc#L123

and to get the views and resolve them for subnfts aswell?

Maybe that is another issue. Granted not very many people have subnfts that are bridge but it would still be nice to have if that ever happends.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 55.55556% with 4 lines in your changes missing coverage. Please review.

Project coverage is 87.28%. Comparing base (f7c98ea) to head (db65396).

Files with missing lines	Patch %	Lines
...adence/contracts/bridge/FlowEVMBridgeNFTEscrow.cdc	40.00%	3 Missing ⚠️
...ence/contracts/bridge/FlowEVMBridgeTokenEscrow.cdc	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #113      +/-   ##
==========================================
+ Coverage   86.33%   87.28%   +0.94%     
==========================================
  Files          17       17              
  Lines         922      920       -2     
==========================================
+ Hits          796      803       +7     
+ Misses        126      117       -9     

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[sisyphusSmiling]

@bjartek updated based on recent convos (thanks for sharing!) and created #115 to add support for sub-NFTs

[sisyphusSmiling]

Merging in preparation for mainnet migration test today, but feel free to review and request changes after the fact @joshuahannan