[dev] Ignore cached flag when hashing outpoint

[m-kus]

Context

Currently TxOut contains cached field which is a hint that tells the client this output will be spent within the same block it is created. Since OutPoint includes TxOut it contributes to the outpoint hash, which becomes a leaf in the Utreexo accumulator. However, the Utreexo node cannot provide this hint (easily), and generally speaking it is not part of the data (it is a hint).

Task

• Add custom implementation of the Hash trait for TxOut to exclude cached field
• Update data generation scripts accordingly
• Regenerate integration tests for utreexo

Depends on #229 (should be merged first)

[mubarak23]

@m-kus i like to take this

Kindly assign

Thank you

[PavitraAgarwal21]

@m-kus Can I take this

[baitcode]

I'd love to work on this. If it's still available, of course.