feat: add Property binding resource support to SDK

[ionmincu]

Summary

• Adds `sdk.bindings.get_property(key, sub_property?)` — a generic API for reading connector-defined Property binding values from `bindings.json` at runtime
• Extends `BindingResourceValue` with optional `description` and `propertyName` fields present in Property bindings
• Merges Property support into `GenericResourceOverwrite` (adds `"property"` to its `resource_type` Literal and an optional `values` field) rather than a separate class
• Documents `Property` as the 7th resource type in `bindings.spec.md`
• Replaces the need for user-maintained helpers like the `get_binding_property()` function seen in vertical solutions

Changes

• `runtime_schema.py` — `BindingResourceValue` gains optional `description` / `propertyName` fields
• `_bindings.py` — `"property"` added to `GenericResourceOverwrite`; `ResourceOverwriteParser.parse` normalises the `Property` key prefix to lowercase and accepts the real runtime flat-dict format
• `_bindings_service.py` (new) — `BindingsService.get_property()` reads bindings.json, supports exact and suffix key matching, and honours runtime overwrites via the existing `_resource_overwrites` ContextVar
• `_uipath.py` — exposes `sdk.bindings` as a `cached_property`
• `bindings.spec.md` — full documentation for the Property resource type including key format, value structure, metadata fields, and SDK usage examples
• `test_property_bindings.py` (new) — unit tests covering happy paths, suffix matching, runtime overwrites (Studio-loaded and real runtime payload formats), and error cases

Breaking Changes

None. All changes are additive:

• ResourceOverwriteParser.parse is strictly more permissive — inputs that previously raised a ValidationError (capital-P key prefix, flat value dict) now succeed. All previously valid inputs produce the same result.
• Making name and folder_path optional on GenericResourceOverwrite is backwards compatible — existing callers that supply them are unaffected.
• PropertyResourceOverwrite was introduced and removed in this same PR, so no external code depends on it.

Test plan

• All existing tests pass (1265 in the main package, full suite green)
• Unit tests for `BindingsService`: exact key, suffix key, missing key/sub-property, missing file
• Runtime overwrite path: Studio-loaded overwrites (fully-qualified key), suffix matching against contextvar, real runtime payload (capital-P key, flat dict)
• `ResourceOverwriteParser` round-trip with all resource types including the new property format

Development Packages

uipath

[project]
dependencies = [
  # Exact version:
  "uipath==2.10.31.dev1014865635",

  # Any version from PR
  "uipath>=2.10.31.dev1014860000,<2.10.31.dev1014870000"
]

[[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" }

[tool.uv]
override-dependencies = [
    "uipath>=2.10.31.dev1014860000,<2.10.31.dev1014870000",
]

uipath-platform

[project]
dependencies = [
  # Exact version:
  "uipath-platform==0.1.9.dev1014865635",

  # Any version from PR
  "uipath-platform>=0.1.9.dev1014860000,<0.1.9.dev1014870000"
]

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

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

[tool.uv]
override-dependencies = [
    "uipath-platform>=0.1.9.dev1014860000,<0.1.9.dev1014870000",
]