Parse url hash value to enable code highlight

[MaxStalker]

Is your feature request related to a problem? Please describe. Sometimes you need to share a project big block of code (let's say full contract) and highlight only specific block of code, which answers the question he asked.

Describe the solution you'd like Github have selection for source code (for example: https://github.com/onflow/flow-playground/blob/master/babel.config.js#L3-L5) - we can implement something similar. Highlighting portion of code with Monaco editor tools and scrolling the block into view.