Add branding endpoints

[ArnyminerZ]

To make sure branding is consistent. Create some configuration for providing icons and banners, and an endpoint to fetch them. Example:

GET /v1/brand/{type}

Parameters:

• type: icon, favicon, banner.

Query arguments:

• size: For resizing the image. Accepts: {width}x{height}
• format: The format of the image. Accepts: SVG, PNG (with transparency), JPG.
• background: The background color of the image. Default: transparent (white if not supported). Accepts HTML colors.

[ArnyminerZ]

Sharp can be used: https://coderrocketfuel.com/article/convert-svg-to-png-using-node-js-and-sharp