Add Adelerate bidder docs

Author: Djole

dev-docs/bidders/adelerate.md

@@ -0,0 +1,33 @@
+---
+layout: bidder
+title: Adelerate
+description: Adelerate's Prebid Bidder Adapter for banner, video, and native demand
+biddercode: adelerate
+media_types: video, native
+usp_supported: true
+gpp_supported: true
+coppa_supported: true
+schain_supported: true
+bidder_supports_deals: true
+userId: all
+pbjs: true
+pbs: true
+pbs_app_supported: true
+safeframes_ok: true
+---
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name            | Scope    | Description                                          | Example     | Type     |
+|-----------------|----------|------------------------------------------------------|-------------|----------|
+| `placementId`   | required | The placement ID provided by Adelerate.              | `'abc123'`  | `string` |
+| `publisherId`   | required | The publisher ID provided by Adelerate.              | `'pub-456'` | `string` |
+| `floor`         | optional | Minimum CPM in USD. Floors module is preferred.      | `0.50`      | `number` |
+| `floorCurrency` | optional | Currency for the floor param. Defaults to `USD`.     | `'EUR'`     | `string` |
+
+### Note                                                                                                                       
+
+Adelerate is not currently registered on the IAB Europe Global Vendor List, so this adapter does not declare a `gvlid`.
+Under GDPR, Prebid core will withhold bid requests and user syncs to this bidder unless the publisher's CMP setup explicitly permits.
+A `gvlid` will be added once IAB Europe registration is finalized.