New Adapter: Empower (#6271)

* New Adapter: Empower

* Explicitly filled all fields

* fillled one forgotten field

* fixes for feedbacks

* fx

* endpoint compression added  and privacy corrected

* privacy_sandbox changed to false

Author: ferrerodbgm

dev-docs/bidders/empower.md

@@ -0,0 +1,93 @@
+---
+layout: bidder
+title: Empower
+description: Prebid Empower Bidder Adapter
+pbjs: true
+biddercode: empower
+gvl_id: 1248
+tcfeu_supported: true
+dsa_supported: true
+usp_supported: true
+coppa_supported: true
+schain_supported: true
+gpp_sids: tcfeu, tcfca, usnat, usstate_all, usp
+dchain_supported: false
+userIds: all
+tcf2_supported: true
+safeframes_ok: true
+deals_supported: true
+floors_supported: true
+fpd_supported: true
+pbs: false
+prebid_member: false
+multiformat_supported: will-bid-on-one
+ortb_blocking_supported: true
+media_types: banner, video
+privacy_sandbox: no
+endpoint_compression: false
+
+sidebarType: 1
+---
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name          | Scope    | Description                | Example                                   | Type      |
+|---------------|----------|----------------------------|--------------------------------------     |-----------|
+| `zone`        | required | provided zone ID from Empower                    | `12456`                              | `int`  |
+| `site`  | optional | provided Site Code from Empower    | `"empower_net"`                              | `string`  |
+
+### Test Parameters
+
+```javascript
+var adUnits = [
+   // Banner adUnit
+   {
+      code: 'banner-div',
+      mediaTypes: {
+        banner: {
+          sizes: [[300, 250], [300,600]]
+        }
+      },
+      bids: [{
+         bidder: 'empower',
+         params: {
+            tagId: 123456
+         }
+       }]
+   },
+   {
+        code: 'video1',
+        mediaTypes: {
+            video: {
+                playerSize: [640, 480],
+                context: 'instream'
+            }
+        },
+        bids: [{
+            bidder: 'empower',
+            params: {
+               tagId: 123456
+            }
+        }]
+    },
+   {
+        code: 'multi1',
+        mediaTypes: {
+            video: {
+                playerSize: [640, 480],
+                context: 'instream'
+            },
+            banner: {
+              sizes: [[300, 250], [300,600]]
+            }
+        },
+        bids: [{
+            bidder: 'empower',
+            params: {
+               tagId: 123456
+            }
+        }]
+    };
+]
+```