[Megane] Add tiny library to translate utf8 characters to kvg code

Libraries/Megane/Source/Megane.cpp

@@ -0,0 +1,49 @@
+#include "Megane/Megane.hpp"
+
+#include <simdjson.h>
+
+#include <print>
+#include <string>
+#include <string_view>
+
+namespace Megane
+{
+    Megane::Megane(const std::string& indexPath)
+    {
+        auto res = simdjson::padded_string::load(indexPath);
+        if (res.error()) {
+            throw Error("Could not load the file");
+        }
+        simdjson::padded_string rawJson = std::move(res.value());
+
+        simdjson::ondemand::parser parser;
+        simdjson::ondemand::document document = parser.iterate(rawJson);
+        for (auto field : document.get_object()) {
+            std::string_view key = field.unescaped_key();
+            std::string_view value;
+            for (auto candidate : field.value()) {
+                if (value.length() == 0) {
+                    value = candidate.value_unsafe().get_string();
+                }
+                else {
+                    std::string_view candidateValue(candidate);
+                    if (candidateValue.length() < value.length()) {
+                        value = candidateValue;
+                    }
+                }
+            }
+            mStorage[std::string(key)] = value;
+        }
+    }
+
+    Megane::~Megane() = default;
+
+    std::string Megane::GetCode(const std::string& character) const
+    {
+        auto it = mStorage.find(character);
+        if (it == mStorage.end()) {
+            throw Error("Failed to find the provided character");
+        }
+        return it->second;
+    }
+}