feat(docs): add more create endpoints

docs/content/docs/member_create.mdx

@@ -0,0 +1,31 @@
+---
+title: member_create
+full: true
+_openapi:
+  method: POST
+  route: member_create
+  toc: []
+  structuredData:
+    headings: []
+    contents:
+      - content: >
+          Make an object (e.g. a user, dataset or group) a member of a group.
+
+
+          If the object is already a member of the group then the capacity of
+          the membership will be updated.
+
+
+          You must be authorized to edit the group.
+---
+
+{/* This file was generated by Fumadocs. Do not edit this file directly. Any changes should be made by running the generation command again. */}
+
+Make an object (e.g. a user, dataset or group) a member of a group.
+
+If the object is already a member of the group then the capacity of the membership will be updated.
+
+You must be authorized to edit the group.
+
+
+<APIPage document={"./lib/openapi.yml"} operations={[{"path":"member_create","method":"post"}]} webhooks={[]} hasHead={false} />