feat: Add missing SDK interface attributes

src/collections/_documentation/clientdev/interfaces/sdk.md

@@ -3,19 +3,49 @@ title: 'SDK Interface'
 sidebar_order: 13
 ---
 
-An interface which describes the SDK used to capture and transmit the event.
+An interface which describes the SDK and its configuration used to capture and
+transmit the event.
 
 `name`
 
-: The name of the SDK.
+: **Required**. The name of the SDK. Its format is `sentry.ecosystem[.flavor]`
+where the _flavor_ is optional and should only be set if it has its own SDK.
 
 `version`
 
-: The version of the SDK.
+: **Required**. The semantic version of the SDK. The version should always be
+sent without a `v` prefix.
+
+`integrations`
+
+: _Optional_. A list of integrations with the platform or a framework that were
+explicitly actived by the user. This does not include default integrations.
+
+`packages`
+
+: _Optional_. A list of packages that were installed as part of this SDK or the
+activated integrations. Each package consists of a `name` in the format
+`source:identifier` and a semver `version`. If the source is a git repository,
+a checkout link and git reference (branch, tag or sha) should be used.
+
+## Example
 
 ```json
 "sdk": {
-  "name": "sentry-php",
-  "version": "1.0.0"
+  "name": "sentry.javscript.react-native",
+  "version": "1.0.0",
+  "integrations": [
+    "redux"
+  ],
+  "packages": [
+    {
+      "name": "npm:@sentry/react-native",
+      "version": "0.39.0"
+    },
+    {
+      "name": "git:https://github.com/getsentry/sentry-cocoa.git",
+      "version": "4.1.0"
+    }
+  ]
 }
 ```