Implemented crude support for custom encodings via thingy files

Relevant issue: #26

include/helpers/encoding_file.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <hex.hpp>
+
+#include <map>
+#include <vector>
+
+namespace hex {
+
+    template<typename T>
+    struct SizeSorter {
+        bool operator() (const T& lhs, const T& rhs) const {
+            return lhs.size() < rhs.size();
+        }
+    };
+
+    class EncodingFile {
+    public:
+        enum class Type {
+            Thingy,
+            CSV
+        };
+
+        EncodingFile() = default;
+        EncodingFile(Type type, std::string_view path);
+
+        std::pair<std::string_view, size_t> getEncodingFor(const std::vector<u8> &buffer) const;
+        size_t getLongestSequence() const { return this->m_longestSequence; }
+
+    private:
+        void parseThingyFile(std::ifstream &content);
+
+        std::map<u32, std::map<std::vector<u8>, std::string>> m_mapping;
+        size_t m_longestSequence = 0;
+    };
+
+}