feat(ske): split options to own subcommand

[Manuelvaas]

Description

relates to STACKITCLI-312

Checklist

• Issue was linked above
• Code format was applied: make fmt
• Examples were added / adjusted (see e.g. here)
• Docs are up-to-date: make generate-docs (will be checked by CI)
• Unit tests got implemented or updated
• Unit tests are passing: make test (will be checked by CI)
• No linter issues: make lint (will be checked by CI)

[github-actions]

Merging this branch will increase overall coverage

Impacted Packages	Coverage Δ	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options	44.06% (+4.36%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/availability_zones	64.86% (+64.86%)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/kubernetes_versions	70.21% (+70.21%)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/machine_images	73.47% (+73.47%)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/machine_types	64.86% (+64.86%)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/volume_types	64.86% (+64.86%)	🌟

---

Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/availability_zones/availability_zones.go	64.86% (+64.86%)	37 (+37)	24 (+24)	13 (+13)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/kubernetes_versions/kubernetes_versions.go	70.21% (+70.21%)	47 (+47)	33 (+33)	14 (+14)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/machine_images/machine_images.go	73.47% (+73.47%)	49 (+49)	36 (+36)	13 (+13)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/machine_types/machine_types.go	64.86% (+64.86%)	37 (+37)	24 (+24)	13 (+13)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/options.go	44.06% (+4.36%)	143 (+12)	63 (+11)	80 (+1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/volume_types/volume_types.go	64.86% (+64.86%)	37 (+37)	24 (+24)	13 (+13)	🌟

Please note that the "Total", "Covered", and "Missed" counts above refer to code statements instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code.

Changed unit test files

• github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/availability_zones/availability_zones_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/kubernetes_versions/kubernetes_versions_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/machine_images/machine_images_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/machine_types/machine_types_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/options_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/ske/options/volume_types/volume_types_test.go