Add advertronic bidder adapter docs

dev-docs/bidders/advertronic.md

@@ -0,0 +1,38 @@
+---
+layout: bidder
+title: Advertronic
+description: Prebid Advertronic Bidder Adapter
+biddercode: advertronic
+media_types: banner, video
+multiformat_supported: will-bid-on-any
+tcfeu_supported: false
+usp_supported: false
+coppa_supported: false
+schain_supported: false
+deals_supported: false
+floors_supported: true
+safeframes_ok: true
+pbjs: true
+pbs: false
+sidebarType: 1
+---
+
+## Note
+
+The Advertronic bid adapter connects to Advertronic SSP (Russian supply-side
+platform). Both `publisherId` and `placementId` are issued during onboarding —
+reach out to <info@advertronic.io>.
+
+Bids are returned **net to the publisher** in **RUB**: enable the currency
+module (or set `adServerCurrency: "RUB"`) if your ad server currency differs.
+
+Video is supported for both contexts. For `outstream` the adapter supplies its
+own renderer (loaded from Advertronic servers) unless the ad unit defines one.
+
+## Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name          | Scope    | Description                              | Example          | Type     |
+|---------------|----------|------------------------------------------|------------------|----------|
+| `publisherId` | required | Publisher ID issued during onboarding    | `'42'`           | `string` |
+| `placementId` | required | Placement token issued during onboarding | `'a1b2c3d4e5f6'` | `string` |