feat(valkey): add Key Value Store to valkey descriptions

[GokceGK]

Description

relates to STACKITTPR-845

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]

This PR was marked as stale after 7 days of inactivity and will be closed after another 7 days of further inactivity. If this PR should be kept open, just add a comment, remove the stale label or push new commits to it.

[GokceGK]

not stale

[github-actions]

Merging this branch changes the coverage (1 decrease, 7 increase)

Impacted Packages	Coverage Δ	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/config/set	91.28% (+0.18%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/config/unset	35.04% (-0.04%)	👎
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/clone	44.44% (+1.59%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/create	51.09% (+2.95%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/redis	0.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/ske/kubeconfig/login	41.20% (+30.02%)	🌟
github.com/stackitcloud/stackit-cli/internal/cmd/valkey	0.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials	0.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/create	56.45% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/delete	35.90% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/describe	69.77% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/list	57.14% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance	0.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/create	62.77% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/delete	25.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/describe	74.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/list	56.52% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/update	61.46% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/plans	53.85% (ø)
github.com/stackitcloud/stackit-cli/internal/pkg/auth	57.53% (+1.32%)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/config	70.53% (+0.10%)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/utils	57.25% (+4.31%)	👍

---

Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/redis/redis.go	0.00% (ø)	6	0	6
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/create/create.go	56.45% (ø)	62	35	27
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/credentials.go	0.00% (ø)	7	0	7
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/delete/delete.go	35.90% (ø)	39	14	25
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/describe/describe.go	69.77% (ø)	43	30	13
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/credentials/list/list.go	57.14% (ø)	49	28	21
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/create/create.go	62.77% (ø)	94	59	35
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/delete/delete.go	25.00% (ø)	40	10	30
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/describe/describe.go	74.00% (ø)	50	37	13
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/instance.go	0.00% (ø)	8	0	8
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/list/list.go	56.52% (ø)	46	26	20
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/instance/update/update.go	61.46% (ø)	96	59	37
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/plans/plans.go	53.85% (ø)	52	28	24
github.com/stackitcloud/stackit-cli/internal/cmd/valkey/valkey.go	0.00% (ø)	6	0	6

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.