refactor: use workspace types with v1 pkg

[adohe]

What type of PR is this?

What this PR does / why we need it:

use workspace types with v1 pkg

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Additional documentation e.g., design docs, usage docs, etc.:

[coveralls]

Pull Request Test Coverage Report for Build 7285727655

• 49 of 78 (62.82%) changed or added relevant lines in 8 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.02%) to 74.611%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/engine/backend/config.go	8	10	80.0%
pkg/workspace/operator.go	5	8	62.5%
pkg/workspace/validation.go	19	23	82.61%
pkg/workspace/util.go	9	29	31.03%

Files with Coverage Reduction	New Missed Lines	%
pkg/engine/operation/watch.go	1	85.93%

Totals
Change from base Build 7284734144:	0.02%
Covered Lines:	7282
Relevant Lines:	9760

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💛 - Coveralls