[SDK] Add lexicon codegen pipeline (@atproto/lex) (#11346)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

lexicons/com/atproto/sync/getRepoStatus.json

@@ -0,0 +1,65 @@
+{
+  "id": "com.atproto.sync.getRepoStatus",
+  "defs": {
+    "main": {
+      "type": "query",
+      "errors": [
+        {
+          "name": "RepoNotFound"
+        }
+      ],
+      "output": {
+        "schema": {
+          "type": "object",
+          "required": [
+            "did",
+            "active"
+          ],
+          "properties": {
+            "did": {
+              "type": "string",
+              "format": "did"
+            },
+            "rev": {
+              "type": "string",
+              "format": "tid",
+              "description": "Optional field, the current rev of the repo, if active=true"
+            },
+            "active": {
+              "type": "boolean"
+            },
+            "status": {
+              "type": "string",
+              "description": "If active=false, this optional field indicates a possible reason for why the account is not active. If active=false and no status is supplied, then the host makes no claim for why the repository is no longer being hosted.",
+              "knownValues": [
+                "takendown",
+                "suspended",
+                "deleted",
+                "deactivated",
+                "desynchronized",
+                "throttled"
+              ]
+            }
+          }
+        },
+        "encoding": "application/json"
+      },
+      "parameters": {
+        "type": "params",
+        "required": [
+          "did"
+        ],
+        "properties": {
+          "did": {
+            "type": "string",
+            "format": "did",
+            "description": "The DID of the repo."
+          }
+        }
+      },
+      "description": "Get the hosting status for a repository, on this server. Expected to be implemented by PDS and Relay."
+    }
+  },
+  "$type": "com.atproto.lexicon.schema",
+  "lexicon": 1
+}