chore: Release stackablectl 1.0.0

[Techassi]

This releases stackablectl 1.0.0.

This is the first version released with the new versioning in place. Previously, the tool used the same versioning as our SDP releases, which lead to confusions, especially around patch-level releases. This is why we decided to use an independent versioning mechanism going forward.

Added

• Pass the stack/demo namespace as a templating variable NAMESPACE to manifests.
  This should unblock demos to run in all namespaces, as they can template the namespace e.g. for the FQDN of services (#355).
• Add progress reporting (#376).
• Include SparkConnectServer in the stacklet list output (#380).
• Add release upgrade functionality to stackablectl release command through upgrade subcommand (#379).

Changed

• Renamed --product-namespace argument to --namespace (#373, #355).
  • Kept --product-namespace as a hidden alias to be removed in a later release.

Fixed

• Prefix ui-http port endpoints with http://, as e.g. used by hbase-operator (#368).

[NickLarsenNZ]

Lgtm