refactor(fx-core): split specGenerator to 3 generators

[tecton]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 91.46341% with 21 lines in your changes missing coverage. Please review.

Project coverage is 90.30%. Comparing base (3cf945f) to head (838aad6).

Files with missing lines	Patch %	Lines
...core/src/component/generator/openApiSpec/common.ts	92.07%	0 Missing and 8 partials ⚠️
...generator/openApiSpec/declarativeAgentGenerator.ts	85.71%	3 Missing ⚠️
...s/vscode-extension/src/treeview/treeViewCommand.ts	0.00%	3 Missing ⚠️
...enerator/openApiSpec/customEngineAgentGenerator.ts	90.47%	1 Missing and 1 partial ⚠️
...-core/src/component/generator/openApiSpec/kiota.ts	95.55%	1 Missing and 1 partial ⚠️
...generator/openApiSpec/messageExtensionGenerator.ts	90.47%	1 Missing and 1 partial ⚠️
...vscode-extension/src/handlers/lifecycleHandlers.ts	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #13282      +/-   ##
==========================================
- Coverage   90.31%   90.30%   -0.02%     
==========================================
  Files         604      609       +5     
  Lines       36040    36098      +58     
  Branches     6991     7131     +140     
==========================================
+ Hits        32549    32597      +48     
- Misses       1514     1519       +5     
- Partials     1977     1982       +5     

Files with missing lines	Coverage Δ
packages/fx-core/src/common/utils.ts	100.00% <100.00%> (ø)
...t/driver/teamsApp/utils/CopilotGptManifestUtils.ts	94.94% <100.00%> (ø)
.../component/generator/copilotExtension/generator.ts	90.24% <ø> (-0.46%)	⬇️
...-core/src/component/generator/generatorProvider.ts	100.00% <100.00%> (ø)
...-core/src/component/generator/openApiSpec/const.ts	100.00% <100.00%> (ø)
...core/src/component/generator/openApiSpec/helper.ts	94.21% <ø> (ø)
packages/fx-core/src/core/FxCore.ts	90.01% <100.00%> (ø)
packages/fx-core/src/index.ts	100.00% <100.00%> (ø)
packages/fx-core/src/question/create.ts	90.39% <100.00%> (ø)
...vscode-extension/src/handlers/lifecycleHandlers.ts	93.20% <83.33%> (ø)
... and 6 more

... and 1 file with indirect coverage changes