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/Scanner/__Libraries/StellaOps.Scanner.Reachability/SinkTaxonomy.cs

@@ -44,7 +44,35 @@ public enum SinkCategory
 
     /// <summary>Authorization bypass (e.g., JWT none alg, missing authz check)</summary>
     [JsonStringEnumMemberName("AUTHZ_BYPASS")]
-    AuthzBypass
+    AuthzBypass,
+
+    /// <summary>LDAP injection (e.g., DirContext.search with user input)</summary>
+    [JsonStringEnumMemberName("LDAP_INJECTION")]
+    LdapInjection,
+
+    /// <summary>XPath injection (e.g., XPath.evaluate with user input)</summary>
+    [JsonStringEnumMemberName("XPATH_INJECTION")]
+    XPathInjection,
+
+    /// <summary>XML External Entity injection (XXE)</summary>
+    [JsonStringEnumMemberName("XXE")]
+    XxeInjection,
+
+    /// <summary>Code/expression injection (e.g., eval, ScriptEngine)</summary>
+    [JsonStringEnumMemberName("CODE_INJECTION")]
+    CodeInjection,
+
+    /// <summary>Log injection (e.g., unvalidated user input in logs)</summary>
+    [JsonStringEnumMemberName("LOG_INJECTION")]
+    LogInjection,
+
+    /// <summary>Reflection-based attacks (e.g., Class.forName with user input)</summary>
+    [JsonStringEnumMemberName("REFLECTION")]
+    Reflection,
+
+    /// <summary>Open redirect (e.g., sendRedirect with user-controlled URL)</summary>
+    [JsonStringEnumMemberName("OPEN_REDIRECT")]
+    OpenRedirect
 }
 
 /// <summary>