add optional regeneration of blurhash when images are updated

[trijpstra-fourlights]

Implements #1

Solution provided by @tefkah

Example usage:

in config/plugins.js

module.exports = {
    ...
    'strapi-blurhash': {
      enabled: true,
      config: {
        regenerateOnUpdate: true
      }
    },
  }

[emil-petras]

Hey, I've tested this. It does not work. I haven't had the time to investigate why. It may be due to regenerateOnUpdate not being loaded (always being false).

[trijpstra-fourlights]

Hi, I'm sorry for the inconvenience. I was not testing for the value of the boolean. Also, plugin configuration is nested in config. So I've updated the OP with the correct usage.