enhance: Refactor the cpp code to be more generic and easy to generate

cpp/gen_header.py

@@ -0,0 +1,12 @@
+import sys, json;
+
+def print_curve(data):
+    print(f'\tSecurityCurve({data["security_level"]},{data["slope"]}, {data["bias"]}, {data["minimal_lwe_dimension"]}, KeyFormat::BINARY),')
+
+def print_cpp_curves_declaration(datas):
+    print("std::vector<SecurityCurve> curves {")
+    for data in datas:
+        print_curve(data)
+    print("}\n")
+
+print_cpp_curves_declaration(json.load(sys.stdin))