feat: add support for on-premises secret provider define in api.kusion.io

[Liuxingyu1111111]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Now if I want to add new secret provider in specific scene(some secret provider is only use in some company thus it can not be open source), I need to add new provider spec in apis/api.kusion.io/v1. I think apis/api.kusion.io/v1 should be consistent among different use case

Which issue(s) this PR fixes:

Fixes #1177

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 9639278902

Details

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.05%) to 54.234%

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Totals
Change from base Build 9610443685:	0.05%
Covered Lines:	9108
Relevant Lines:	16794

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9640402778

Details

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.04%) to 54.222%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/engine/operation/parser/parser.go	3	79.27%

Totals
Change from base Build 9610443685:	0.04%
Covered Lines:	9106
Relevant Lines:	16794

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9641914653

Details

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• 10 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.004%) to 54.18%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/engine/operation/parser/parser.go	3	79.27%
pkg/engine/api/destroy.go	7	83.06%

Totals
Change from base Build 9610443685:	-0.004%
Covered Lines:	9099
Relevant Lines:	16794

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9642330685

Details

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.01%) to 54.225%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/engine/operation/parser/parser.go	3	79.27%

Totals
Change from base Build 9642175477:	-0.01%
Covered Lines:	9112
Relevant Lines:	16804

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9642898933

Details

• 3 of 5 (60.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.002%) to 54.237%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/secrets/providers.go	3	5	60.0%

Totals
Change from base Build 9642175477:	0.002%
Covered Lines:	9115
Relevant Lines:	16806

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9643022192

Details

• 3 of 5 (60.0%) changed or added relevant lines in 1 file are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 54.219%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/secrets/providers.go	3	5	60.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/engine/operation/parser/parser.go	3	79.27%

Totals
Change from base Build 9642175477:	-0.02%
Covered Lines:	9112
Relevant Lines:	16806

---

💛 - Coveralls

[SparkYuan]

lgtm