refactor: rename apollo to ares and add ascii art display

- Rename agent from "Apollo" to "Ares" across documentation and configuration
- Update config.json to reference Ares container image instead of Apollo
- Replace Apollo logo with Ares logo in documentation
- Rename workspace file from Apollo.code-workspace to Ares.code-workspace
- Add ASCII art display function to agent startup sequence
- Remove obsolete refactor analysis document

Ares.code-workspace

@@ -0,0 +1,21 @@
+{
+    "folders": [
+        {
+            "name": "Ares code",
+            "path": "Payload_Type/apollo/apollo/agent_code"
+        },
+        {
+            "name": "Mythic code",
+            "path": "Payload_Type/apollo/apollo/mythic"
+        },
+        {
+            "name": "Project Root",
+            "path": "."
+        }
+    ],
+    "extensions": {
+        "recommendations": [
+            "EditorConfig.EditorConfig"
+        ]
+    }
+}