[Internal][Executor] Return inputs definition and has aggregation by initialize api in execution server

[PeiwenGaoMS]

Description

Return inputs definition and has aggregation by initialize api in execution server to avoid creating flow executor in runtime container.

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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Testing Guidelines

• Pull request includes test coverage for the included changes.

[github-actions]

promptflow SDK CLI Azure E2E Test Result devs/peiwen/return_info_by_init

  4 files    4 suites   4m 9s ⏱️
242 tests 205 ✅  37 💤 0 ❌
968 runs  820 ✅ 148 💤 0 ❌

Results for commit 1449eeb.

♻️ This comment has been updated with latest results.

[github-actions]

promptflow-core test result

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 1449eeb.

♻️ This comment has been updated with latest results.

[github-actions]

SDK CLI Global Config Test Result devs/peiwen/return_info_by_init

6 tests   6 ✅  1m 14s ⏱️
1 suites  0 💤
1 files    0 ❌

Results for commit 1449eeb.

♻️ This comment has been updated with latest results.

[github-actions]

Executor Unit Test Result devs/peiwen/return_info_by_init

796 tests   796 ✅  3m 48s ⏱️
  1 suites    0 💤
  1 files      0 ❌

Results for commit 1449eeb.

♻️ This comment has been updated with latest results.