add fwssp.md (#6000)

Author: ghluo-fw

dev-docs/bidders/fwssp.md

@@ -0,0 +1,25 @@
+---
+layout: bidder
+title: FWSSP
+description: Freewheel Bidder Adaptor
+pbs: true
+biddercode: fwssp
+gvl_id: 285
+tcfeu_supported: true
+usp_supported: true
+gpp_supported: true
+coppa_supported: true
+schain_supported: true
+media_types: video
+ortb_blocking_supported: partial
+---
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name     | Scope    | Description | Example | Type     |
+|----------|----------|-------------------------|--------|----------|
+| `custom_site_section_id` | required | custom Site Section tag or numeric Site Section ID | "ss_12345" | `string` |
+| `network_id` | required | Network ID | "12345" | `string` |
+| `profile_id` | required | The value should contain a profile name. and NOT a numeric profile ID. This can either include the network ID prefix or with the profile name alone | "prof_12345" | `string` |
+