Akshaya/mocking improvements

[akshaylive]

1. Standardization of errors
   1. UiPathMockResponseGenerationError to represent errors during generation of mocked response.
   2. UiPathNoMockFoundError to represent that the method should not be mocked.
2. Model selection
3. Preparing to get use run examples in LLM Mocker.

Development Package

• Add this package as a dependency in your pyproject.toml:

[project]
dependencies = [
  # Exact version:
  "uipath==2.1.78.dev1006561569",

  # Any version from PR
  "uipath>=2.1.78.dev1006560000,<2.1.78.dev1006570000"
]

[[tool.uv.index]]
name = "testpypi"
url = "https://test.pypi.org/simple/"
publish-url = "https://test.pypi.org/legacy/"
explicit = true

[tool.uv.sources]
uipath = { index = "testpypi" }

[Copilot]

Pull Request Overview

This PR implements mocking improvements by standardizing error handling, adding model selection capabilities, and preparing for example call usage in LLM mocking. The changes introduce custom exception types to replace generic NotImplementedError exceptions and add support for configurable model parameters and example calls in the mocking framework.

• Standardized error handling with custom UiPath exception types for mocking scenarios
• Added model parameter configuration support for LLM mocking with temperature, top_p, top_k, etc.
• Introduced example call functionality to provide context for LLM-based mocking

Reviewed Changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/uipath/_cli/_evals/mocks/mocker.py	Defines new exception types for mocking error scenarios
src/uipath/_cli/_evals/mocks/mocks.py	Updates exception handling and adds example call support to mockable decorator
src/uipath/_cli/_evals/mocks/mockito_mocker.py	Implements proper error handling with new exception types
src/uipath/_cli/_evals/mocks/llm_mocker.py	Adds model parameter support and example call integration
src/uipath/_cli/_evals/_models/_evaluation_set.py	Adds ModelSettings for configurable LLM parameters
src/uipath/_services/llm_gateway_service.py	Adds top_k parameter support to chat completions
src/uipath/agent/models/agent.py	Introduces BaseResourceProperties with example calls
tests/cli/eval/mocks/test_mocks.py	Updates tests to use new exception types
samples/calculator/main.py	Demonstrates example call usage in mockable decorator
samples/calculator/evals/eval-sets/default.json	Shows model configuration in evaluation set

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