Allow the transformer middleware for individual content types for plu…

[kevinvugts]

…gins

This adds support for allowing individual content-types to be transformed by the transformer middleware.

Example config:

    enabled: true,
    config: {
      responseTransforms: {
        removeAttributesKey: true,
        removeDataKey: true,
      },
      contentTypeFilter: {
        mode: "allow",
        uids: {
          "api::blog.blog": true,
        },
      },
      plugins: {
        mode: "allow",
        ids: {
          "some-plugin": {
            mode: "allow",
            uids: {
              "plugin::some-plugin.some-content-type": true,
            },
          },
        },
      },
    },
  },```