feat(auth): add workload-identity-metadata command (#740)

* refactor(auth): consolidate auth subcommands into single command package

Merge the separate login, logout, printaccesstoken and flag packages
into one internal/auth/command package, mirroring the structure used by
other domains. Subcommand constructors become unexported and the Auth()
constructor moves into command.go.

* feat(auth): add workload-identity-metadata command

Add "nais auth workload-identity-metadata" which resolves the workload
identity OIDC issuer for the selected environment via the API and fetches
its discovery document from /.well-known/openid-configuration, printing
the JSON to stdout.

fix: manglet flagg for å be om onprem

feat: opt-in for å få onprem-cluster

De færreste som installerer nais-cli nå trenger tilgang til onprem,
derfor er det blitt opt-in hvis du trenger det.

fix: handle empty result in app list and status tables (#739)

naistrix Table.Render errors on empty slices. Guard the app list and
app status commands so an empty API response (e.g. invalid environment
filter or a group with zero instances) prints a message or skips the
table instead of crashing.

upkeep: uten .txt så får man fancy view i gui

build: bump go and deps (#738)

* build: bump go and deps

* refactor: fix issues mentioned by golangci-lint

feat: lenke til tilgjengelighetserklæring

feat(app): add `app set image` command to roll back to a previous ima…

…ge (#737)

Co-authored-by: Frode Sundby <frode.sundby@nav.no>

fix: disk size er to ord

build(deps): bump github.com/go-git/go-git/v5 from 5.16.5 to 5.19.1 (#…

…732)

Bumps [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) from 5.16.5 to 5.19.1.
- [Release notes](https://github.com/go-git/go-git/releases)
- [Changelog](https://github.com/go-git/go-git/blob/main/HISTORY.md)
- [Commits](go-git/go-git@v5.16.5...v5.19.1)

---
updated-dependencies:
- dependency-name: github.com/go-git/go-git/v5
  dependency-version: 5.19.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>