Add utility for generating JSDoc @example blocks

[gcanti]

This commit adds a new HTML utility file code2jsdoc-example.html to assist with writing JSDoc @example comments.

A simple web-based interface with two text areas:

• Input textarea for pasting example code.
• Output textarea that generates formatted JSDoc @example comments dynamically.

Example Input:

import { Effect } from "effect"

console.log(Effect.runSyncExit(Effect.succeed(1)))
/*
Output:
{
  _id: "Exit",
  _tag: "Success",
  value: 1
}
*/

Output:

*
* @example
* import { Effect } from "effect"
* 
* console.log(Effect.runSyncExit(Effect.succeed(1)))
* // Output:
* // {
* //   _id: "Exit",
* //   _tag: "Success",
* //   value: 1
* // }
* 

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Latest commit: 765c1036e95e4942cea070fd782f5adf00ea9ac4

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[IMax153]

To avoid cluttering the root dir, I suggest we put this into /scripts somewhere.