feat: ABCI Execution Client Implementation

README.md

@@ -0,0 +1,23 @@
+## Architecture
+
+```mermaid
+graph TB
+  subgraph go-execution
+    R[Execute Interface]
+  end
+  subgraph "go-execution-abci"
+    AEC[ABCIExecutionClient]
+  end
+  subgraph "CometBFT"
+    ABCI[ABCI Application]
+    MP[Mempool]
+    EB[EventBus]
+  end
+  R -->|implements| AEC
+  AEC -->|ABCI Calls| ABCI
+  AEC -->|Tx Management| MP
+  AEC -->|Events| EB
+  classDef default fill:#f9f9f9,stroke:#333,stroke-width:2px;
+  classDef highlight fill:#e1f7d5,stroke:#333,stroke-width:2px;
+  class AEC highlight;
+```