docs: cut 6.1.0 versions for user_docs, admin_docs, developer_docs, components

Snapshots all four versioned Docusaurus sections at v6.1.0, cut from
master after the version-cutting tooling (#39837), broken-internal-
links fix (#40102), and user_docs rename (#40171) all landed. With
the rename in place, all four sections now produce parallel-named
files at the docs/ root (no more bare `versioned_docs/` outlier).

Versioning behavior: lastVersion stays at current for every section,
so the canonical URLs (/user-docs/..., /admin-docs/...,
/developer-docs/..., /components/...) continue to render content
from master. The current version is consistently labeled "Next"
with an unreleased banner, and 6.1.0 is a historical pin accessible
only via its explicit version segment.

Component playground: previously disabled: true in versions-config.json,
now enabled and versioned.

Snapshot includes:
- All MDX content for the four sections.
- Auto-gen captured fresh: 74 database pages (engine spec metadata),
  ~1,800 API reference files (openapi.json), 59 component pages
  (Storybook stories).
- Data imports frozen at cut time into snapshot-local _versioned_data/
  dirs:
    user_docs_versioned_docs/version-6.1.0/_versioned_data/src/data/databases.json
      (canonical 80-database diagnostics from master, preserved by the
      generator's input-hash cache)
    admin_docs_versioned_docs/version-6.1.0/_versioned_data/data/countries.json
    admin_docs_versioned_docs/version-6.1.0/_versioned_data/static/feature-flags.json
    developer_docs_versioned_docs/version-6.1.0/_versioned_data/static/data/components.json
- Import paths in deeply-nested files rewritten so they still resolve
  from one directory deeper inside the snapshot.
- developer_docs/extensions/overview.md snapshot has the FIXED
  ./mcp.md form (from #40102), so the SPA-nav 404 isn't baked into
  the 6.1.0 version.

Verified via full yarn build: exit 0, no broken links surfaced by
onBrokenLinks: throw.

docs/developer_docs_versioned_docs/version-6.1.0/api/create-security-groups.api.mdx

@@ -0,0 +1,66 @@
+---
+id: create-security-groups
+title: "Create security groups"
+description: "Create security groups"
+sidebar_label: "Create security groups"
+hide_title: true
+hide_table_of_contents: true
+api: eJztWFtv2zYU/ivEwYAmmBLbwQIUKvqQBOmarmuC2t0GREFKSye2GopUSMqJJui/D4eUZPmGoU2BvvQpJnku/L5z4VEq0PhQoLGnKikhrCBW0qK09JPnuUhjblMlB1+MkrRn4jlmnH7lWuWobYqGVgmaWKc5yW4s4Xetipz19wLI+NN7lDM7h/B4dBRAlsp2PQxAFkLwqUAIrS4wAFvmCCEYq1M5gzoAwacodnnyhys+RsfDr/YheYa7XLizVQ/DVQ+jLRa1Elvoakz6wwBSi5kTatRTaXGGmvSbHa41L2ldGNQ77fnDr7BHF8SHItWYQHjt4d90Qmr6BWMLAdjUEmney5Uyduxzog4An3iWiy2kNRR0cVtueJKX64ai69FNB+96dFPT5VZN/qkSFKzJx/7NKZoOismVNJ7vo+HoGcmt0RTC/kz6n0m/mfT1uuxqGSxT57kF0asHKoeNevD4Y43cYkK3+G04fEbOZ2gMn2GPwjai/4O4U4RTnrDmdQnZhVxwkSYs55pnaFEblmu1SBO67Caanq7H8pz6/Q5YPkle2LnS6b+YhOyksHOUtvHPugTaAqSv6JAcHf1oJLlWMS2nAhmhsGXI/qLgeDSotdLboJypQiRMKssaC402uTr+0cl2IS1qyQUzqBeoPYqQnUhWSHzKMbaY+E2m4rjQO8L1hlsuOgoCMBgXmjCG1xV8ebSu+qg/8BlVIoybc+bKz1DrIGAO9kUCIfiCvG3t3M68XABPB7FKcOygGGdecDkjjU8f3/caQ7M0qtAxAY0LLdjBP+zqcjxhEcytzcPBQKiYi7kyNnw5fPlywPN0sBgNWq8D73UQAYuiSDJ28JZFcNIkprtsyE6Ra9Tsl5Ozs/Px+HZy+cf5h1WFMx/dg0mZY8jWA7yUTdiLKoJ7LCMIWQQLLgqMoH4BddChvCrt3L2JLc5uo0OaZrnStm0DJpKRbB919rrbPsyVsXvkl309HYHXmyNPUJvX1Rop/v4NMRGwXxmPKfFvrbpHWTfaBP71NsCR3I9krlNp99qLH5Lw3v5+n4p3fMHHLgd7dKxsLoOvpCFGOhb4I08tu0Mbzx0H38ZA5YFkaOcqIQSUXOvshK0YW88dQv25TZ/KUzRxDH0Olir97PE8bWaQl26JnaqkDNm78eWHQ98P0rtyr2L3WPZYZvU+SRPZryLpCUq45R05a9Q3QkrgoVCzPRLdfwVU02vdzhUuaxljXeF6liAESjwIIOc0+cAuiil8riX5Ii80RXdrkGD9Cu/pmCW4QKHyDKVtmptLHm+oyrWyKlaiDgeDikzVYUVlU29YOyuMVVlrIoAF1ym9Aabpx86Mn1TuuBta3DUhAJRFRs2uWdIf1+lW7b+dTK5YZ6cOgG6zaq/Du3G5se/adEYDEFOaXVyREcKyamQrVY2+k65rimYbBzeoeZCuf1cwdZn6RumMk713f08oRk4MwuYUunfHga4DUr7VeKfRzL/VCFkxSn5cfnGff78PpmFvQBze1AGk8k5tGh4XOWqD/Zm2t0Vp6uUWI8++sRl3b3fjd2dZrH0MNcAtPtlBLngq3eiuXYL5irkGnqfkcwS9dzaAziKlmM+ha6iqKTf4SYu6pu2HAnXph+I2jd3LHIBvVq7U7rF0U8uy7bisF4Ub/9fHE6opr3ESx+ja7m7Zm14boF4JAUybf6BkKiEdzR8pOPwRQgAaCkjbf03Snm/+hZ9dvE1KD5oVe+x1adT8IFTt54ssezesKi/huy7Vvofi3imo6YPhP1evJ8Y=
+sidebar_class_name: "post api-method"
+info_path: developer-docs/api/superset
+custom_edit_url: null
+hide_send_button: true
+show_extensions: true
+---
+
+import MethodEndpoint from "@theme/ApiExplorer/MethodEndpoint";
+import ParamsDetails from "@theme/ParamsDetails";
+import RequestSchema from "@theme/RequestSchema";
+import StatusCodes from "@theme/StatusCodes";
+import OperationTabs from "@theme/OperationTabs";
+import TabItem from "@theme/TabItem";
+import Heading from "@theme/Heading";
+import Translate from "@docusaurus/Translate";
+
+<Heading
+  as={"h1"}
+  className={"openapi__heading"}
+  children={"Create security groups"}
+>
+</Heading>
+
+<MethodEndpoint
+  method={"post"}
+  path={"/api/v1/security/groups/"}
+  context={"endpoint"}
+>
+
+</MethodEndpoint>
+
+
+
+Create security groups
+
+<Heading
+  id={"request"}
+  as={"h2"}
+  className={"openapi-tabs__heading"}
+>
+  <Translate id="theme.openapi.request.title">Request</Translate>
+</Heading>
+
+<ParamsDetails>
+
+</ParamsDetails>
+
+<RequestSchema
+  {...require("./create-security-groups.RequestSchema.json")}
+>
+
+</RequestSchema>
+
+<StatusCodes
+  {...require("./create-security-groups.StatusCodes.json")}
+>
+
+</StatusCodes>