chore(objectstorage): migrate to new SDK structure

[rubenhoenle]

Description

relates to STACKITCLI-369

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 decrease overall coverage

Impacted Packages	Coverage Δ	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/create	38.30% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/delete	28.95% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/describe	66.67% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/list	42.86% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/create	56.76% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/delete	34.38% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/list	62.79% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/create	58.82% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/delete	39.02% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/list	61.11% (-0.43%)	👎
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/disable	29.41% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/enable	29.41% (ø)
github.com/stackitcloud/stackit-cli/internal/pkg/services/object-storage/client	0.00% (ø)
github.com/stackitcloud/stackit-cli/internal/pkg/services/object-storage/utils	96.77% (ø)

---

Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/create/create.go	38.30% (ø)	47	18	29
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/delete/delete.go	28.95% (ø)	38	11	27
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/describe/describe.go	66.67% (ø)	39	26	13
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/list/list.go	42.86% (ø)	49	21	28
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/create/create.go	56.76% (ø)	37	21	16
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/delete/delete.go	34.38% (ø)	32	11	21
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/list/list.go	62.79% (ø)	43	27	16
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/create/create.go	58.82% (ø)	51	30	21
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/delete/delete.go	39.02% (ø)	41	16	25
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/list/list.go	61.11% (-0.43%)	54 (+2)	33 (+1)	21 (+1)	👎
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/disable/disable.go	29.41% (ø)	34	10	24
github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/enable/enable.go	29.41% (ø)	34	10	24
github.com/stackitcloud/stackit-cli/internal/pkg/services/object-storage/client/client.go	0.00% (ø)	1	0	1
github.com/stackitcloud/stackit-cli/internal/pkg/services/object-storage/utils/utils.go	96.77% (ø)	31	30	1

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/object-storage/bucket/create/create_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/delete/delete_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/describe/describe_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/bucket/list/list_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/create/create_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/delete/delete_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials-group/list/list_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/create/create_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/delete/delete_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/credentials/list/list_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/disable/disable_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/object-storage/enable/enable_test.go
• github.com/stackitcloud/stackit-cli/internal/pkg/services/object-storage/utils/utils_test.go