feat: add stella-callgraph-node for JavaScript/TypeScript call graph extraction

- Implemented a new tool `stella-callgraph-node` that extracts call graphs from JavaScript/TypeScript projects using Babel AST.
- Added command-line interface with options for JSON output and help.
- Included functionality to analyze project structure, detect functions, and build call graphs.
- Created a package.json file for dependency management.

feat: introduce stella-callgraph-python for Python call graph extraction

- Developed `stella-callgraph-python` to extract call graphs from Python projects using AST analysis.
- Implemented command-line interface with options for JSON output and verbose logging.
- Added framework detection to identify popular web frameworks and their entry points.
- Created an AST analyzer to traverse Python code and extract function definitions and calls.
- Included requirements.txt for project dependencies.

chore: add framework detection for Python projects

- Implemented framework detection logic to identify frameworks like Flask, FastAPI, Django, and others based on project files and import patterns.
- Enhanced the AST analyzer to recognize entry points based on decorators and function definitions.

src/Policy/__Libraries/StellaOps.Policy/StellaOps.Policy.csproj

@@ -24,5 +24,7 @@
 
   <ItemGroup>
     <ProjectReference Include="../../StellaOps.Policy.RiskProfile/StellaOps.Policy.RiskProfile.csproj" />
+    <ProjectReference Include="../../../Attestor/__Libraries/StellaOps.Attestor.ProofChain/StellaOps.Attestor.ProofChain.csproj" />
+    <ProjectReference Include="../../../__Libraries/StellaOps.Canonical.Json/StellaOps.Canonical.Json.csproj" />
   </ItemGroup>
 </Project>