ui: Add max image size option (#22849)

* webui: Add max image size option

* remove magic numbers

* support all image formats

* use const

* Move regex to match b64 images to constants

* use SETTINGS_KEYS to get max image resolution setting

* Do not touch the image if already under the size threshold

tools/ui/src/lib/constants/uri-template.ts

@@ -55,3 +55,6 @@ export const VARIABLE_PREFIX_MODIFIER_REGEX = /:[\d]+$/;
 
 /** Regex to strip one or more leading slashes */
 export const LEADING_SLASHES_REGEX = /^\/+/;
+
+/** Regex to match base64-encoded image URIs (format: "data:image/[media type];base64,[data]")*/
+export const BASE64_IMAGE_URI_REGEX = /^data:(image\/[a-z0-9.\-+]+);base64/;