Boost: Chunk concatenated JS/CSS urls

[dilirity]

There's a limit of a 150 files when doing concatenation:

https://github.com/Automattic/jetpack/blob/52e377bdde5e87bfc088358a1869c9d6535adbbb/projects/plugins/boost/app/lib/minify/functions-service.php#L153

If there are more than 150 files, the user would get a 400 error and their page would be broken:

https://github.com/Automattic/jetpack/blob/52e377bdde5e87bfc088358a1869c9d6535adbbb/projects/plugins/boost/app/lib/minify/functions-service.php#L202-L204

We should start a new chunk as soon as the limit is hit when creating the URL here:

https://github.com/Automattic/jetpack/blob/52e377bdde5e87bfc088358a1869c9d6535adbbb/projects/plugins/boost/app/lib/minify/Concatenate_JS.php#L248

https://github.com/Automattic/jetpack/blob/52e377bdde5e87bfc088358a1869c9d6535adbbb/projects/plugins/boost/app/lib/minify/Concatenate_CSS.php#L188

[github-actions[bot]]

OpenAI suggested the following labels for this issue:

• [Feature Group] Other Infrastructure: The issue pertains to the underlying infrastructure related to file handling, specifically the limitations of concatenating files.
• [Feature] Concat: This label is directly relevant as the issue discusses the concatenation of JavaScript and CSS files and surpassing the file limit.
• [Feature] Asset CDN: This relates to the delivery of assets like JS and CSS, which is impacted by the issue of concatenation and file limits.