BidDigi Bid Adapter: add bidder doc

dev-docs/bidders/biddigi.md

@@ -0,0 +1,95 @@
+---
+layout: bidder
+title: BidDigi
+description: Prebid BidDigi Bidder Adapter
+pbjs: true
+pbs: false
+biddercode: biddigi
+media_types: banner, video, native
+sidebarType: 1
+---
+
+### Note
+
+BidDigi is a programmatic SSP with 380+ verified publishers across news, sports, entertainment,
+OTT and CTV. This adapter connects to BidDigi's own OpenRTB 2.5+ auction endpoint, letting any
+Prebid.js publisher (not just BidDigi's own network) request bids from BidDigi's demand.
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name | Scope | Description | Example | Type |
+|------|-------|--------------|---------|------|
+| `placementId` | required | BidDigi placement identifier, from your BidDigi dashboard | `'placement-123'` | `string` |
+| `publisherId` | required | BidDigi publisher/account identifier | `'publisher-abc'` | `string` |
+| `region` | optional | Routes the bid request to a regional BidDigi endpoint. Defaults to `'in'`. | `'in'`, `'us'` | `string` |
+| `bidfloor` | optional | Per-imp floor override, in `bidfloorcur` (defaults to INR) | `12.5` | `float` |
+| `bidfloorcur` | optional | Currency of `bidfloor` | `'INR'` | `string` |
+
+### Test Parameters
+
+```js
+const adUnits = [
+  {
+    code: 'banner-div',
+    mediaTypes: {
+      banner: {
+        sizes: [[300, 250], [300, 600]],
+      },
+    },
+    bids: [
+      {
+        bidder: 'biddigi',
+        params: {
+          placementId: 'placement-123',
+          publisherId: 'publisher-abc',
+        },
+      },
+    ],
+  },
+  {
+    code: 'video-div',
+    mediaTypes: {
+      video: {
+        context: 'instream',
+        playerSize: [640, 480],
+        mimes: ['video/mp4'],
+        protocols: [2, 5],
+        minduration: 5,
+        maxduration: 30,
+      },
+    },
+    bids: [
+      {
+        bidder: 'biddigi',
+        params: {
+          placementId: 'placement-video-1',
+          publisherId: 'publisher-abc',
+          region: 'us',
+        },
+      },
+    ],
+  },
+  {
+    code: 'native-div',
+    mediaTypes: {
+      native: {
+        title: { required: true, len: 80 },
+        image: { required: true },
+        sponsoredBy: { required: true },
+        clickUrl: { required: true },
+        body: { required: false },
+      },
+    },
+    bids: [
+      {
+        bidder: 'biddigi',
+        params: {
+          placementId: 'placement-native-1',
+          publisherId: 'publisher-abc',
+        },
+      },
+    ],
+  },
+];
+```