Add function to parse a silent-block

[theanmolsharma]

Add a function to packages/core/src/encoding.ts called parseSilentBlock() which accepts a silent block as input and returns a structured representation of the block. The function should adhere to the silent block specification outlined in this document.

Function signature:

parseSilentBlock(block: Buffer): SilentBlock {}

[chaitika]

Hi, could you assign this to me?