Fix createImageFromParams to return raw image or url using a custom template

[sweptsquash]

This pull request includes updates to documentation and enhancements to the OgImage class to improve functionality and maintainability. The most important changes involve adding installation instructions for different Ubuntu versions in the README.md and extending the createImageFromParams method to support custom templates and return options.

Previously the method createImageFromParams used a custom template and returned a raw image this PR makes a change to reintroduce this support. By default createImageFromParams will return the url of the generated/cached image.

Documentation Updates:

• Added installation instructions for Ubuntu 22.04+: Updated the README.md to include steps for installing Chromium on Ubuntu 22.04+ using a new PPA, along with a note to update the CHROME_PATH environment variable.

Enhancements to OgImage Class:

• Improved method formatting: Fixed formatting in the getStorageImageFileData and getStorageViewFileName methods to improve code readability.
• Extended createImageFromParams method: Added support for specifying a custom template and an option to return the raw image data instead of the URL. This makes the method more versatile for different use cases.

[Baspa]

Thanks @sweptsquash! I'll try to take a look at it tonight.