Add new adverxo Bidder alias: alchemyx (prebid#6398)

* Add new adverxo alias: alchemyx

* Update dev-docs/bidders/alchemyx.md

Co-authored-by: Muki Seiler <muuki88@users.noreply.github.com>

* Update dev-docs/bidders/alchemyx.md

Co-authored-by: Muki Seiler <muuki88@users.noreply.github.com>

* Update dev-docs/bidders/alchemyx.md

Co-authored-by: Muki Seiler <muuki88@users.noreply.github.com>

---------

Co-authored-by: Abraham <abraham@kimiagroup.com>
Co-authored-by: Muki Seiler <muuki88@users.noreply.github.com>

Author: 3 people

dev-docs/bidders/alchemyx.md

@@ -0,0 +1,113 @@
+---
+layout: bidder
+title: AlchemyX
+description: Prebid AlchemyX Bidder Adapter
+aliasCode: adverxo
+pbjs: true
+pbs: false
+pbs_app_supported: false
+biddercode: alchemyx
+media_types: banner, native, video
+schain_supported: true
+dchain_supported: false
+ortb_blocking_supported: true
+floors_supported: true
+multiformat_supported: will-bid-on-any
+tcfeu_supported: false
+dsa_supported: false
+gvl_id: none
+usp_supported: false
+coppa_supported: false
+gpp_sids: none
+userId: none
+safeframes_ok: false
+deals_supported: true
+fpd_supported: true
+prebid_member: false
+sidebarType: 1
+---
+
+### Note
+
+The AlchemyX Bidding adapter requires setup and approval before beginning. Please reach out to <prebid@alchemyx.io> for
+more details.
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name | Scope | Description | Example | Type |
+|----------|----------|-----------------------|---------------------------|----------|
+| `adUnitId`   | required | Unique identifier for the ad unit in AlchemyX platform. | `1` | `integer` |
+| `auth`       | required | Authentication token provided by AlchemyX platform for the AdUnit. |`'61336e75e414c77c367eq5c47c2599ce80a8032b'` | `string` |
+
+### Setting First Party Data (FPD)
+
+Publishers should use the `ortb2` method of setting First Party Data. The following fields are supported:
+
+- ortb2.site.\*
+- ortb2.app.\*
+- ortb2.user.\*
+
+Example first party data:
+
+```javascript
+pbjs.setConfig({
+    ortb2: {
+        site: {
+            keywords: "kw1,kw2",
+            content: {
+                title: "title1",
+                series: "series1"
+            }
+        },
+        user: {
+            keywords: "a,b",
+            gender: "M",
+            yob: 1984
+        }
+    }
+});
+```
+
+### ORTB Blocking
+
+AlchemyX supports the next blocking parameters:
+
+- Blocked advertisers list (`badv`) is an array of domains as strings.
+- Blocked apps list (`bapp`) is an array of apps names as strings, for mobile apps in Google Play Store, these should be
+  bundle or package names (e.g. com.foo.mygame). For apps in Apple App Store, these should be a numeric ID.
+- Blocked categories list (`bcat`) is an array of IAB categories as strings.
+- Blocked attributes list (`battr`) is an array of integers. Refer to section 5.3 of the IAB specification for a list of
+  attributes.
+
+#### Globally defined ORTB Blocking
+
+```javascript
+pbjs.setConfig({
+    ortb2: {
+        badv: ["domain1.com", "domain2.com"],
+        bapp: ["com.foo.mygame", "284708449"],
+        bcat: ["IAB23-1", "IAB23-5", "IAB25-3", "IAB25-2"]
+    }
+});
+```
+
+#### ORTB Blocking specific only to the AlchemyX bidder
+
+```javascript
+pbjs.setBidderConfig({
+    bidders: ['alchemyx'],
+    config: {
+        ortb2: {
+            badv: ["domain1.com", "domain2.com"],
+            bapp: ["com.foo.mygame"],
+            bcat: ["IAB23-1", "IAB23-5", "IAB25-3", "IAB25-2"]
+        }
+    }
+});
+```
+
+#### Media Type defined ORTB Blocking
+
+Additionally `battr` ORTB blocking param may be set on media types to specify blocked creative
+attributes. Refer to section 5.3 of the IAB specification for a list of attributes.