added code generation example

data/astrapy.README.md

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+# AstraPy Documentation
+
+This data file contains the AstraPy documentation in a specialized format for use
+in the GraphRAG `code_generation` example.
+
+## Generation
+
+The file was generated using `astrapy` version `1.5.2` via the `convert` method in
+`graph_rag_example_helpers.examples.code_generation.converter`. See the help on the
+method for more information about how to use it.
+
+## Structure
+
+The JSONL file contains one JSON object per line, with the following structure:
+
+id: the path to the object in the package
+text: the description of the object (if any, can be empty)
+
+metadata: Always includes `name`, `path`, `kind` keys.
+            The remaining keys below are included when available.
+    name: the name of the object
+    path: the path to the object in the package
+    kind: either `module`, `class`, `function`, or `attribute`
+    parameters: the parameters for a class or function. Includes type
+        information, default values, and descriptions
+    attributes: the attributes on a class or module. Includes type
+        information and descriptions
+    gathered_types: list of non-standard types in the parameters and attributes
+    imports: list of non-standard types imported by the class or module
+    exports: list of non-standard types exported by the module
+    properties: list of boolean properties about the module
+    example: any code examples for the class, function, or module
+    references: list of any non-standard types used in the example code
+    returns: the return type and description
+    yields: the yield type and description
+    bases: list of base types inherited by the class
+    implemented_by: list of types that implement the a base class