Extract commonly used Parser code to new Parser component

src/Parser/Parsing/Impl/ParserFilesystemStream.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <stack>
+#include <fstream>
+
+#include "Parsing/IParserLineStream.h"
+
+class ParserFilesystemStream final : public IParserLineStream
+{
+    class FileInfo
+    {
+    public:
+        std::string m_file_path;
+        std::ifstream m_stream;
+        int m_line_number;
+
+        explicit FileInfo(std::string filePath);
+    };
+    std::stack<FileInfo> m_files;
+
+public:
+    explicit ParserFilesystemStream(std::string path);
+
+    ParserLine NextLine() override;
+    bool IncludeFile(const std::string& filename) override;
+    void PopCurrentFile() override;
+    _NODISCARD bool IsOpen() const override;
+    _NODISCARD bool Eof() const override;
+};