IlluminBidAdapter (#4813)

* added gpp_supported: true

* added illuminBidAdapter docs

* Remove wrong gvlid

dev-docs/bidders/illumin.md

@@ -0,0 +1,70 @@
+---
+layout: bidder
+title: Illumin
+description: Prebid Illumin Bidder Adaptor
+biddercode: illumin
+filename: illuminBidAdapter
+userIds: britepoolId, criteo, id5Id, identityLink, liveIntentId, netId, parrableId, pubCommonId, unifiedId
+tcfeu_supported: true
+usp_supported: true
+coppa_supported: false
+schain_supported: true
+gpp_supported: true
+floors_supported: true
+media_types: banner, video
+prebid_member: false
+safeframes_ok: false
+deals_supported: false
+pbs_app_supported: false
+fpd_supported: false
+ortb_blocking_supported: false
+multiformat_supported: will-bid-on-one
+pbjs: true
+sidebarType: 1
+---
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name       | Scope    | Description                                                                               | Example                      | Type     |
+|------------|----------|-------------------------------------------------------------------------------------------|------------------------------|----------|
+| `cId`      | required | The connection ID from Illumin.                                                          | `'562524b21b1c1f08117fc7f9'` | `string` |
+| `pId`      | required | The publisher ID from Illumin.                                                           | `'59ac17c192832d0011283fe3'` | `string` |
+| `bidFloor` | optional | The minimum bid value desired. Illumin will not respond with bids lower than this value. | `0.90`                       | `float`  |
+
+## Example
+
+  ```javascript
+var adUnits = [{
+        code: 'banner-div',
+        mediaTypes: {
+            banner: {
+                sizes: [
+                    [300, 250],
+                    [728, 90]
+                ]
+            }
+        },
+        bids: [{
+            bidder: 'illumin',
+            params: {
+                cId: '562524b21b1c1f08117fc7f9', // Required - PROVIDED DURING SETUP...
+                pId: '59ac17c192832d0011283fe3', // Required - PROVIDED DURING SETUP...
+                bidFloor: 1.23                   // Optional
+            }
+        }]
+    }
+];
+
+// configure pbjs to enable user syncing
+pbjs.setConfig({
+    userSync: {
+      filterSettings: {
+        iframe: {
+          bidders: 'illumin',
+          filter: 'include'
+        }
+      }
+    }
+});
+```