docs: add pyproject.toml and README for line_by_line_test sample

Author: AAgnihotry

packages/uipath/samples/line_by_line_test/README.md

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+# Line-by-Line Evaluation Sample
+
+This sample demonstrates the line-by-line evaluation feature for output evaluators.
+
+## Overview
+
+Line-by-line evaluation allows evaluators to:
+- Split multi-line outputs by a configurable delimiter (e.g., `\n`)
+- Evaluate each line independently
+- Provide partial credit based on the percentage of correct lines
+- Return detailed per-line feedback
+
+## Features Demonstrated
+
+- **Partial Credit Scoring**: Get 0.67 for 2/3 correct lines instead of 0.0
+- **Per-Line Feedback**: See exactly which lines passed or failed
+- **Configurable Delimiter**: Use `\n`, `|`, or any custom delimiter
+- **Comparison**: Side-by-side comparison with regular evaluation
+
+## Installation
+
+This sample uses the UiPath package from TestPyPI:
+
+```bash
+# Install dependencies
+uv sync
+
+# Or manually install
+uv pip install --index-url https://test.pypi.org/simple/ "uipath>=2.10.30.dev1014810000,<2.10.30.dev1014820000"
+```
+
+## Usage
+
+### Run the agent
+
+```bash
+uv run uipath run main '{"items": ["apple", "banana", "cherry"]}'
+```
+
+### Run evaluations
+
+```bash
+uv run uipath eval main evaluations/eval-sets/default.json --workers 1
+```
+
+## Evaluation Results
+
+The sample includes three test cases:
+
+1. **All lines match exactly** - Both evaluators score 1.0
+2. **One line doesn't match** - Line-by-line: 0.67, Regular: 0.0 (shows partial credit!)
+3. **Single item** - Both evaluators score 1.0
+
+Expected output:
+```
+┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━┓
+┃  Evaluation                   ┃  LineByLineExactMatch  ┃  RegularExactMatch  ┃
+┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━┩
+│  Test all lines match         │                   1.0  │                1.0  │
+│  Test when one line doesn't   │                   0.7  │                0.0  │  ← Key difference!
+│  Test with single item        │                   1.0  │                1.0  │
+├───────────────────────────────┼────────────────────────┼─────────────────────┤
+│  Average                      │                   0.9  │                0.7  │
+└───────────────────────────────┴────────────────────────┴─────────────────────┘
+```
+
+## Configuration
+
+### Evaluator Configuration
+
+The line-by-line evaluator is configured in `evaluations/evaluators/line-by-line-exact-match.json`:
+
+```json
+{
+  "evaluatorConfig": {
+    "name": "LineByLineExactMatch",
+    "targetOutputKey": "result",
+    "lineByLineEvaluator": true,
+    "lineDelimiter": "\n"
+  }
+}
+```
+
+Key options:
+- `lineByLineEvaluator`: Enable line-by-line evaluation (default: `false`)
+- `lineDelimiter`: Delimiter to split lines (default: `"\n"`)
+
+### Custom Delimiters
+
+You can use any delimiter:
+
+```json
+{
+  "evaluatorConfig": {
+    "lineByLineEvaluator": true,
+    "lineDelimiter": "|"  // Pipe-separated values
+  }
+}
+```
+
+## File Structure
+
+```
+line_by_line_test/
+├── main.py                              # Simple agent that outputs one item per line
+├── uipath.json                          # Agent configuration
+├── pyproject.toml                       # Dependencies (uses TestPyPI)
+└── evaluations/
+    ├── evaluators/
+    │   ├── line-by-line-exact-match.json    # Line-by-line evaluator
+    │   └── regular-exact-match.json          # Regular evaluator (for comparison)
+    └── eval-sets/
+        └── default.json                      # Test cases
+```
+
+## Learn More
+
+- [UiPath Python SDK Documentation](https://docs.uipath.com/)
+- [Evaluation Framework Guide](../../src/uipath/_resources/eval.md)

packages/uipath/samples/line_by_line_test/pyproject.toml

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+[project]
+name = "line-by-line-test"
+version = "0.1.0"
+description = "Sample agent demonstrating line-by-line evaluation"
+requires-python = ">=3.11"
+dependencies = [
+  # Use the version from your PR on TestPyPI
+  "uipath>=2.10.30.dev1014810000,<2.10.30.dev1014820000"
+]
+
+[[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" }