Generate BlockKit Builder URL for an array of blocks

[jimmyhlee94]

Is your feature request related to a problem? Please describe.
having to go back and forth between blockkit builder and code is a bit tedious because of formatting differences between json (which is what blockkit builder accepts) and anything else you might use.

It seems like the entirety of the blockkit you design via the builder is URL-encoded, so we could build a pretty quick helper to generate the link for an array of blockkit blocks.

Describe the solution you'd like
A TS/JS utility that will return the blockkit builder URL provided an array of blockkit blocks:

// if it's a utility function
console.log(toBlockKitBuilderURL([/*array of KnownBlocks*/])
// https://api.slack.com/tools/block-kit-builder?mode=message&blocks=<blahblahblah>

// or using some imaginary class-based blockkit builder tool **nudge nudge**
console.log(Builder.section().section().section().toBlockKitBuilderURL());

Describe alternatives you've considered
copy-pasting almost-json into vscode and using the Fix JSON extension to format the contents

[raycharius]

Hi Jimmy, you should check out slack-block-builder. It's got the chainable interfaces you're referred to, as well as a printPreviewUrl() method for every surface.