chore: deprecate planName and version flags, remove planId validation

[SerseusWasTaken]

Description

Applied for logme,mariadb,opensearch,rabbitmq and redis

Relates to STACKITCLI-440

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/logme/instance/create	62.64% (+1.10%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/logme/instance/update	59.57% (+0.63%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/mariadb/instance/create	63.33% (+1.11%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/mariadb/instance/update	58.70% (+0.63%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/opensearch/instance/create	62.92% (+1.12%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/opensearch/instance/update	60.42% (+1.04%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/rabbitmq/instance/create	62.89% (+1.03%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/rabbitmq/instance/update	59.57% (+0.63%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/redis/instance/create	62.50% (+1.04%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/redis/instance/update	58.70% (+0.63%)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/errors	75.96% (ø)
github.com/stackitcloud/stackit-cli/internal/pkg/services/logme/utils	32.00% (+5.33%)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/mariadb/utils	32.00% (+5.33%)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/opensearch/utils	32.00% (+5.33%)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/rabbitmq/utils	32.00% (+5.33%)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/redis/utils	32.00% (+5.33%)	👍

---

Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/logme/instance/create/create.go	62.64% (+1.10%)	91	57 (+1)	34 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/logme/instance/update/update.go	59.57% (+0.63%)	94 (-1)	56	38 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/mariadb/instance/create/create.go	63.33% (+1.11%)	90	57 (+1)	33 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/mariadb/instance/update/update.go	58.70% (+0.63%)	92 (-1)	54	38 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/opensearch/instance/create/create.go	62.92% (+1.12%)	89	56 (+1)	33 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/opensearch/instance/update/update.go	60.42% (+1.04%)	96	58 (+1)	38 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/rabbitmq/instance/create/create.go	62.89% (+1.03%)	97	61 (+1)	36 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/rabbitmq/instance/update/update.go	59.57% (+0.63%)	94 (-1)	56	38 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/redis/instance/create/create.go	62.50% (+1.04%)	96	60 (+1)	36 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/redis/instance/update/update.go	58.70% (+0.63%)	92 (-1)	54	38 (-1)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/errors/errors.go	75.96% (ø)	104	79	25
github.com/stackitcloud/stackit-cli/internal/pkg/services/logme/utils/utils.go	32.00% (+5.33%)	25 (-5)	8	17 (-5)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/mariadb/utils/utils.go	32.00% (+5.33%)	25 (-5)	8	17 (-5)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/opensearch/utils/utils.go	32.00% (+5.33%)	25 (-5)	8	17 (-5)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/rabbitmq/utils/utils.go	32.00% (+5.33%)	25 (-5)	8	17 (-5)	👍
github.com/stackitcloud/stackit-cli/internal/pkg/services/redis/utils/utils.go	32.00% (+5.33%)	25 (-5)	8	17 (-5)	👍

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.

[cgoetz-inovex]

PR lgtm from a technical stand point.
Do we see any chance to improve the UX of the current solution?

Before:

Error: the provided instance plan is not valid.

You provided plan ID "ffffffff-ffff-ffff-ffff-ffffffffffff", which is invalid.

For more details on the available plans, run:
  $ stackit redis plans

After:

Error: create Redis instance: 400 Bad Request, status code 400, Body: {"error":"Provision failed. no service offering found for plan_id=ffffffff-ffff-ffff-ffff-ffffffffffff","description":""}

I've checked the redis api docs, but sadly the errors are not defined in the spec in a way we could reliably use here. But the "Before" error message is quite nice. It's formatted and also hints at redis plans.