AGT-552: Additional query params doc (#12)

Author: dmytro-po

dev-docs/modules/userid-submodules/intentiq.md

@@ -55,8 +55,13 @@ Please find below list of parameters that could be used in configuring Intent IQ
 | params.iiqPixelServerAddress   | Optional | String   | The base URL for the IntentIQ pixel synchronization server. If parameter is provided in `configParams`, it will be used.                                                                                                                                                                                                                  | `"https://domain.com"`                        |
 | params.reportingServerAddress  | Optional | String   | The base URL for the IntentIQ reporting server. If parameter is provided in `configParams`, it will be used.                                                                                                                                                                                                                              | `"https://domain.com"`                        |
 | params.reportMethod            | Optional | String   | Defines the HTTP method used to send the analytics report. If set to `"POST"`, the report payload will be sent in the body of the request. If set to `"GET"` (default), the payload will be included as a query parameter in the request URL.                                                                                             |`"GET"`                                        |
-| params.siloEnabled             | Optional | Boolean  | Determines if first-party data is stored in a siloed storage key. When set to `true`, first-party data is stored under a modified key that appends `_p_` plus the partner value rather than using the default storage key. The default value is `false`.                                                                          | `true`                                        |`1`                                           |
-| params.groupChanged             | Optional | Function | A callback that is triggered every time the user’s A/B group is set or updated.                                                                                         |`(group) => console.log('Group changed:', group)` |
+| params.siloEnabled             | Optional | Boolean  | Determines if first-party data is stored in a siloed storage key. When set to `true`, first-party data is stored under a modified key that appends `_p_` plus the partner value rather than using the default storage key. The default value is `false`.                                                                          | `true`                                        |
+| params.groupChanged            | Optional | Function | A callback that is triggered every time the user’s A/B group is set or updated.                                                                                         |`(group) => console.log('Group changed:', group)` |
+| params.additionalParameters | Optional | Array | This parameter allows sending additional custom key-value parameters with specific destination logic (sync, VR, winreport). Each custom parameter is defined as an object in the array. | `[ { parameterName: “abc”, parameterValue: 123, destination: [1,1,0] } ]` |
+| params.additionalParameters [0].parameterName | Required | String | Name of the custom parameter. This will be sent as a query parameter. | `"abc"` |
+| params.additionalParameters [0].parameterValue | Required | String / Number | Value to assign to the parameter. | `123` |
+| params.additionalParameters [0].destination | Required | Array | Array of numbers either `1` or `0` . Controls where this parameter is sent `[sendWithSync, sendWithVr, winreport]`. | `[1, 0, 0]`
+
 
 ### Configuration example
 
@@ -78,7 +83,19 @@ pbjs.setConfig({
                 adUnitConfig: 1, // Extracting placementId strategy (adUnitCode or placementId order of priorities)
                 sourceMetaData: "123.123.123.123", // Optional parameter
                 sourceMetaDataExternal: 123456, // Optional parameter
-                reportMethod: "GET" // Optional parameter
+                reportMethod: "GET", // Optional parameter
+                additionalParameters: [
+                    {
+                      parameterName: "abc",
+                      parameterValue: 123,
+                      destination: [1, 1, 0] // sendWithSync: true, sendWithVr: true, winreport: false
+                    },
+                    {
+                      parameterName: "xyz",
+                      parameterValue: 111,
+                      destination: [0, 1, 1] // sendWithSync: false, sendWithVr: true, winreport: true
+                    }
+                ]
             },
             storage: {
                 type: "html5",