[emulator] Move the public C++ API out of the BinaryNinja namespace

The plugin's LLILEmulator wrapper lived in namespace BinaryNinja, which is
reserved for the core API. Move it to its own BinaryNinjaEmulatorAPI namespace,
mirroring the debugger's BinaryNinjaDebuggerAPI.

Addresses plafosse review comment on PR #8314.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: xusheng6

plugins/emulator/api/emulatorapi.h

@@ -25,7 +25,11 @@ limitations under the License.
 #include <utility>
 #include <vector>
 
-namespace BinaryNinja
+using namespace BinaryNinja;
+
+// The plugin's public C++ API lives in its own namespace (mirroring
+// BinaryNinjaDebuggerAPI) rather than in BinaryNinja, which is reserved for the core API.
+namespace BinaryNinjaEmulatorAPI
 {
 	/*!
 		\ingroup emulator
@@ -153,4 +157,4 @@ namespace BinaryNinja
 		std::string SaveState() const;
 		bool LoadState(const std::string& json);
 	};
-}  // namespace BinaryNinja
+}  // namespace BinaryNinjaEmulatorAPI

plugins/emulator/api/ilemulator.cpp

@@ -23,6 +23,7 @@
 #include "emulatorapi.h"
 
 using namespace BinaryNinja;
+using namespace BinaryNinjaEmulatorAPI;
 
 
 LLILEmulator::LLILEmulator(Ref<BinaryView> view)