Signed-off-by: Jussi Kukkonen <jkukkonen@google.com>

Signed-off-by: Jussi Kukkonen <jkukkonen@google.com>

Note that deployment to GCS is still commented out in publish workflow.

Signed-off-by: Jussi Kukkonen <jkukkonen@google.com>

Delete legacy (meaning non- tuf-on-ci)
 * timestamp and snapshot workflows
 * GCS uploading workflows
 * signing event management workflows (dealing with "ceremony/" dirs)
 * various verification workflows: now handled by the
   tuf-on-ci tests and custom-test.yml

Remove these outright to prevent accidental changes to metadata from two
different maintenance systems.

If it turns out the migration will not be successful in the timeframe it
has, the PR that contains this commit needs to be reverted so the legacy
system can continue operation.

Signed-off-by: Jussi Kukkonen <jkukkonen@google.com>

Signed-off-by: Fredrik Skogman <kommendorkapten@github.com>

'registry.npmjs.org' role/delegation change

Signed-off-by: Fredrik Skogman <kommendorkapten@github.com>

Signed-off-by: Fredrik Skogman <kommendorkapten@github.com>

Signature over npm delegation.

Signed-off-by: Joshua Lock <joshuagloe@gmail.com>

Signature from @joshuagl

Signed-off-by: Bob Callaway <bcallaway@google.com>

Signature from @bobcallaway

Signed-off-by: Dan Lorenc <dlorenc@chainguard.dev>

Signature from @dlorenc

Signed-off-by: Marina Moore <mnm678@gmail.com>

Signature from @mnm678

Signed-off-by: Santiago Torres-Arias <santiagotorres@purdue.edu>

Signature from @SantiagoTorres

Merge the branch that
* disables legacy workflows
* enables tuf-on-ci workflows (apart from final GCS prod publish)
into the migration signing event branch

This should ensure that once we merge the signing event, all the correct
workflows will run, and old ones will not.