[gssdp] (13 commits) ...ci: Use docs dir for documentation deployment

[Jens Georg <jensgeorg src gnome org>]

Summary of changes:

  14f7509... sniffer: Add some information (*)
  12bdc3d... doc: Use gi-docgen for the documentation (*)
  71cf088... client: Update docs and introspection (*)
  1b23f9b... doc: Add logo (*)
  a0f09c0... doc: Add links to dependencies (*)
  fbaa428... doc: Some dependency fixes (*)
  de595ee... resource-browser: Update docs and introspection (*)
  5040f8c... resource-group: Fix intrspection and docs (*)
  3bc14e9... Error: Add short tagline (*)
  df5f512... doc: Remove old gtk-doc files (*)
  baba225... doc: Set authors string (*)
  2efc67d... doc: Dist docs (*)
  9770842... ci: Use docs dir for documentation deployment (*)

(*) This commit already existed in another branch; no separate mail sent