Create a go struct for ValidationProtocol

[kishansagathiya]

Issue summary

Translate rust struct for ValidationProtocol into go.
Make sure that our go struct is same as rust using scale encoding.

• Make sure that both struct produces the same scale encoding.

• Make sure that scale encoding of go struct for ValidationProtocol can be decoded into rust struct for ValidationProtocol and they have the same internal properties

• Make sure that scale encodoing of rust struct for ValidationProtocol can be decoded into go struct for ValidationProtocol and they have the same internal properties

• ValidationProtocol contains three types of messages

  • Statement Distribution Message ( Create a go struct for Statement Distribution Message #3289)
  • Approval Distribution Message (Create a go struct for Approval Distribution Message  #3288)
  • Bitfield Distribution Message

• This issue should be picked up after Create a go struct for Statement Distribution Message #3289 and Create a go struct for Approval Distribution Message  #3288 as it requires them.

Other information and links

Code for ValidationProtocol here

• https://github.com/paritytech/polkadot/blob/b6b74fdf546c14bf9ac93c03916abda9ee33a52f/node/network/protocol/src/lib.rs#L520
• https://paritytech.github.io/polkadot/book/types/network.html#validation-v1

[kishansagathiya]

closed in #3382