[Add] Deprecation MACRO working for bothC++ and Python binding

include/aidge/utils/Deprecated.hpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+
+#ifndef AIDGE_UTILS_DEPRECATED_H_
+#define AIDGE_UTILS_DEPRECATED_H_
+
+#include <string>
+#include <cctype>
+
+#ifdef PYBIND
+#include <pybind11/pybind11.h>
+#endif
+
+#include "aidge/utils/Log.hpp"
+
+#ifdef PYBIND
+namespace py = pybind11;
+
+static std::string camelToSnakeCase(const std::string &camelCase) {
+    std::string snake;
+    snake.reserve(camelCase.size() + 2); // slightly bigger buffer
+    for (std::size_t i = 0; i < camelCase.size(); ++i) {
+        char ch = camelCase[i];
+        if (std::isupper(static_cast<unsigned char>(ch))) {
+            snake.push_back('_');
+            snake.push_back(std::tolower(static_cast<unsigned char>(ch)));
+        } else {
+            snake.push_back(ch);
+        }
+    }
+    return snake;
+}
+
+#define DEPRECATED_PYBIND(oldName, newName)                                    \
+    /* Under PYBIND, if Python is initialized, convert names to snake_case */  \
+    if (Py_IsInitialized()) {                                                  \
+        deprecatedFuncNameStr = toSnakeCase(deprecatedFuncNameStr);            \
+        newFuncNameStr  = toSnakeCase(newFuncNameStr);                         \
+    }
+#else
+#define DEPRECATED_PYBIND(oldName, newName) {}
+#endif
+
+#define DEPRECATED(newFuncName)                                                \
+  do {                                                                         \
+    std::string deprecatedFuncNameStr(__func__);                               \
+    std::string newFuncNameStr(newFuncName);                                   \
+    DEPRECATED_PYBIND(oldName, newName);                                       \
+    Aidge::Log::warn("'{}()' is deprecated, please use '{}()' instead", deprecatedFuncNameStr, newFuncNameStr); \
+  } while (0)
+
+  #endif // AIDGE_UTILS_DEPRECATED_H_
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