Feat/container annotation filter

[jiwahn]

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Does this PR introduce a user-facing change?

Added support for filtering containers by annotations with `podman ps --filter annotation=...` and `podman container prune --filter annotation=...`.

Related Issuse

Resolves #28562

Changes

• cmd/podman/common/completion.go: Adds annotation= completion for podman ps --filter and splits out a container-prune-specific filter completion helper that includes annotation=.
• cmd/podman/containers/prune.go: Updates podman container prune --filter to use the container-prune-specific completion helper.
• docs/source/markdown/options/filter.container.md: Documents annotation and annotation! as supported container filters.
• docs/source/markdown/podman-container-prune.1.md: Documents annotation-based filters for podman container prune.
• docs/source/markdown/podman-ps.1.md.in: Adds an annotation filter example for podman ps and notes that annotation filters are not supported for external containers.
• pkg/domain/filters/containers.go: Implements annotation and annotation! filtering for container list/prune operations and rejects them for external containers.
• test/e2e/prune_test.go: Adds an e2e test for pruning containers by annotation.
• test/e2e/ps_test.go: Adds e2e coverage for annotation / annotation! filters in podman ps and verifies rejection for external containers.

[Honny1]

Thanks, I have some comments. First, please also update the Swagger documentation. Then I would like to see some tests that will test negated annotations, and the last thing is, please squash commits.

[packit-as-a-service]

Cockpit tests failed for commit 5e890eb. @martinpitt, @jelly, @mvollmer please check.

[Honny1]

LGTM