feat: c sharp executor poc

[elliotzh]

Description

Please add an informative description that covers that changes made by the pull request and link all relevant issues.

All Promptflow Contribution checklist:

• The pull request does not introduce [breaking changes].
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.
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General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[github-actions]

Executor Unit Test Result zhangxingzhi/c-sharp-support-poc

    2 files      2 suites   43s ⏱️
255 tests 254 ✔️ 1 💤 0 ❌
502 runs  499 ✔️ 3 💤 0 ❌

Results for commit 01cb82d.

[github-actions]

SDK PFS E2E Test Result zhangxingzhi/c-sharp-support-poc

8 tests   8 ✔️  30s ⏱️
1 suites  0 💤
1 files    0 ❌

Results for commit 01cb82d.

[github-actions]

SDK CLI Global Config Test Result zhangxingzhi/c-sharp-support-poc

2 tests   2 ✔️  2m 18s ⏱️
1 suites  0 💤
1 files    0 ❌

Results for commit 01cb82d.

[github-actions]

Executor E2E Test Result zhangxingzhi/c-sharp-support-poc

    2 files      2 suites   5m 24s ⏱️
  97 tests   95 ✔️ 2 💤 0 ❌
194 runs  188 ✔️ 6 💤 0 ❌

Results for commit 01cb82d.

[github-actions]

SDK CLI Test Result zhangxingzhi/c-sharp-support-poc

    2 files      2 suites   22m 2s ⏱️
259 tests 244 ✔️ 15 💤 0 ❌
518 runs  488 ✔️ 30 💤 0 ❌

Results for commit 01cb82d.