feat(callstats) Add `callStatsConfigParams` config

config.js

@@ -530,6 +530,28 @@ var config = {
     // callStatsID: '',
     // callStatsSecret: '',
 
+    // The callstats initialize config params as described in the API:
+    // https://docs.callstats.io/docs/javascript#callstatsinitialize-with-app-secret
+    // callStatsConfigParams: {
+    //     disableBeforeUnloadHandler: true, // disables callstats.js's window.onbeforeunload parameter.
+    //     applicationVersion: "app_version", // Application version specified by the developer.
+    //     disablePrecalltest: true, // disables the pre-call test, it is enabled by default.
+    //     siteID: "siteID", // The name/ID of the site/campus from where the call/pre-call test is made.
+    //     additionalIDs: { // additionalIDs object, contains application related IDs.
+    //         customerID: "Customer Identifier. Example, walmart.",
+    //         tenantID: "Tenant Identifier. Example, monster.",
+    //         productName: "Product Name. Example, Jitsi.",
+    //         meetingsName: "Meeting Name. Example, Jitsi loves callstats.",
+    //         serverName: "Server/MiddleBox Name. Example, jvb-prod-us-east-mlkncws12.",
+    //         pbxID: "PBX Identifier. Example, walmart.",
+    //         pbxExtensionID: "PBX Extension Identifier. Example, 5625.",
+    //         fqExtensionID: "Fully qualified Extension Identifier. Example, +71 (US) +5625.",
+    //         sessionID: "Session Identifier. Example, session-12-34"
+    //     },
+    //     collectLegacyStats: true, //enables the collection of legacy stats in chrome browser
+    //     collectIP: true //enables the collection localIP address
+    // },
+
     // Enables sending participants' display names to callstats
     // enableDisplayNameInStats: false,
 

react/features/base/config/configWhitelist.js

@@ -50,6 +50,7 @@ export default [
      */
     'callHandle',
     'callStatsConfIDNamespace',
+    'callStatsConfigParams',
     'callStatsID',
     'callStatsSecret',