feat(emulator): implement gRPC control server and emulator commands

- Added `AgentControlServer` to manage gRPC connections for emulator control.
- Introduced `EmulatorServiceImpl` with methods for starting, stopping, and controlling the emulator, including button presses and memory operations.
- Created new command handlers for pressing, releasing, and holding emulator buttons.
- Updated CMake configuration to include new source files and proto definitions for the emulator service.

Benefits:
- Enhanced control over the emulator through gRPC, allowing for remote interactions.
- Improved modularity and maintainability of the emulator's command handling.
- Streamlined integration of new features for emulator control and state inspection.

assets/agent/function_schemas.json

@@ -34,6 +34,87 @@
         "required": ["type", "query"]
       }
     },
+    {
+      "name": "emulator-press-buttons",
+      "description": "Presses and immediately releases one or more buttons on the SNES controller.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "buttons": {
+            "type": "string",
+            "description": "A comma-separated list of buttons to press (e.g., 'A,Right,Start')."
+          }
+        },
+        "required": ["buttons"]
+      }
+    },
+    {
+      "name": "emulator-hold-buttons",
+      "description": "Holds down one or more buttons for a specified duration.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "buttons": {
+            "type": "string",
+            "description": "A comma-separated list of buttons to hold."
+          },
+          "duration": {
+            "type": "integer",
+            "description": "The duration in milliseconds to hold the buttons."
+          }
+        },
+        "required": ["buttons", "duration"]
+      }
+    },
+    {
+      "name": "emulator-get-state",
+      "description": "Retrieves the current state of the game from the emulator.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "screenshot": {
+            "type": "boolean",
+            "description": "Whether to include a screenshot of the current frame."
+          }
+        }
+      }
+    },
+    {
+      "name": "emulator-read-memory",
+      "description": "Reads a block of memory from the SNES WRAM.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "address": {
+            "type": "string",
+            "description": "The memory address to read from (e.g., '0x7E0010')."
+          },
+          "length": {
+            "type": "integer",
+            "description": "The number of bytes to read."
+          }
+        },
+        "required": ["address"]
+      }
+    },
+    {
+      "name": "emulator-write-memory",
+      "description": "Writes a block of data to the SNES WRAM.",
+      "parameters": {
+        "type": "object",
+        "properties": {
+          "address": {
+            "type": "string",
+            "description": "The memory address to write to."
+          },
+          "data": {
+            "type": "string",
+            "description": "The data to write, as a hex string (e.g., 'AABBCCDD')."
+          }
+        },
+        "required": ["address", "data"]
+      }
+    },
     {
       "name": "dungeon-list-sprites",
       "description": "List all sprites in a specific dungeon or room",