feat: add structured JSON output for all CLI commands

[radu-mocanu]

Summary

• Rename ConsoleLogger → CliLogger with output_mode property ("console" | "json")
• In JSON mode, all console.* methods collect messages internally instead of printing; console.error() raises CLIError instead of calling ctx.exit(1); spinners are suppressed
• LazyGroup.invoke() wraps all command execution — calls CliLogger.emit() on success (JSON to stdout), catches CLIError/click.ClickException and emits JSON error to stderr
• service_command decorator routes data through CliLogger.set_result() in JSON mode
• Backwards-compatible: ConsoleLogger alias preserved, --format table (default) behavior unchanged

JSON Output Structure

Success:

{
  "status": "success",
  "messages": [{"level": "info", "message": "..."}],
  "data": { ... }
}

Error (stderr):

{
  "status": "error",
  "error": "Authentication failed...",
  "messages": [{"level": "info", "message": "..."}]
}

Test plan

• 33 unit tests for CliLogger (console mode + JSON mode behavior)
• 6 integration tests exercising full CLI flow with --format json
• All 1696 existing tests pass (no regressions)
• Lint and format clean (ruff check + ruff format)

Fixes #768

🤖 Generated with Claude Code

Development Packages

uipath

[project]
dependencies = [
  # Exact version:
  "uipath==2.10.34.dev1015175702",

  # Any version from PR
  "uipath>=2.10.34.dev1015170000,<2.10.34.dev1015180000"
]

[[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" }