A fully working version of the scheduling language with added examples

transformation/schedule/schedule_lib/README.md

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+## Node Module
+
+Defines the abstract base Node class for graph-based structures. Each Node is assigned
+a unique identifier via an external IdGenerator. The class provides an interface for
+managing execution state and generating DOT graph representations using Jinja2 templates.
+
+### Class: `Node`
+
+- **Attributes**
+  - `id: int`: A unique identifier assigned to each instance upon initialization.
+
+- **Methods**
+  - `get_id` 
+    - returns: `int`, The unique node ID
+    
+    Retrieves the unique identifier of the node.
+
+  - `generate_stack_frame`
+    - exec_id: `int`, The ID of the execution context.
+    - returns: `None`
+      
+    Initializes a new state frame for a specific execution context.
+    Designed to be overridden in subclasses that use execution state.
+    
+  - `delete_stack_frame`
+    - exec_id: `int`, The ID of the execution context.
+    - returns: `None`
+      
+    Deletes the state frame for a specific execution context.
+    Designed to be overridden in subclasses that use execution state.
+    
+  - `generate_dot`
+    - nodes: `list[str]`, A list to append DOT node definitions to.
+    - edges: `list[str]`, A list to append DOT edges definitions to.
+    - visited: `set[str]`, A set of already visited node IDs to avoid duplicates or recursion.
+    - template: `list[str]`, A Jinja2 template used to format the node's DOT representation.
+    - returns: `None`
+      
+    Generates the DOT graph representation for this node and its relationships.
+    Must be implemented in subclasses.
+