🏛️ [EPIC] : Catalyst voting v2 transaction

[Mr-Leshiy]

Summary

Defined and implement a new v2 transaction for catalyst voting.

JIRA Epic

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Description

For a new catalyst stack as catalyst-voices/catalyst-backend and Athena need to specify a voting transaction structure, same which have a jormungandr for their own ledger.

Todo

• 🛠️ [TASK]: Generalised Catalyst voting v2 transaction design spec. #64
• 🛠️ [TASK] : Catalyst transaction v2 structure #69
• 🛠️ [TASK] : Generalizes voting tx decoding implementation #75
• 🛠️ [TASK] : Public and Private vote tx v2 decoding implementation #84

[stevenj]

Epic is blocked due to a temporary change in priorities