feat(web): add setting for minimum face count for face detection (#4128)

* feat: add setting for minimum face count for face detection

Adds the minimum face count setting to the web interface to
circumvent detection of strangers and random background people
if desired.

* fix: codestyle, remove max for face count

web/src/api/open-api/api.ts

@@ -2152,6 +2152,12 @@ export interface RecognitionConfig {
      * @memberof RecognitionConfig
      */
     'maxDistance': number;
+    /**
+     * 
+     * @type {number}
+     * @memberof RecognitionConfig
+     */
+    'minFaces': number;
     /**
      * 
      * @type {number}