Archive the sirius-legacy repo

[pcdavid]

The code from the original Gerrit has been imported.

[github-actions]

Diff for 5c7791c:

Printing local diff for configuration at '/home/runner/work/.eclipsefdn/.eclipsefdn/otterdog-configs/otterdog.json'

Actions are indicated with the following symbols:
+   create
!   modify
!   forced update
-   delete

Organization eclipse-sirius[id=eclipse-sirius]
╷
│ Warning: branch_protection_rule[pattern="master", repository=".github"] has 'requires_pull_request' disabled but 'required_approving_review_count' is set to '2', setting will be ignored.
╵
  there have been 3 validation infos, enable verbose output with '-v' to to display them.

  
!   repository[name="sirius-legacy"] {
!     archived                                                 = false -> true
!     has_discussions                                          = true -> false
!   }
  
  Plan: 0 to add, 2 to change, 0 to delete.

Showing diff to a canonical version of the configuration at '/home/runner/work/.eclipsefdn/.eclipsefdn/otterdog-configs/otterdog.json'

Organization eclipse-sirius[id=eclipse-sirius]
--- original
+++ canonical
@@ -63,6 +63,7 @@
       default_branch: "master"
       delete_branch_on_merge: false
       description: "Sirius Legacy: legacy (unmaintained) components from Sirius Desktop"
+      has_discussions: false
       has_issues: false
       has_projects: false
       has_wiki: false

[netomi]

change is live.