ui: implemented prefilling indexed header paths for compilation database projects

* fixed header path detection in CompilationDatabase class

src/lib/utility/utilityFile.cpp

@@ -0,0 +1,28 @@
+#include "utility/utilityFile.h"
+
+std::vector<FilePath> utility::getTopLevelPaths(const std::vector<FilePath>& paths)
+{
+	std::vector<FilePath> topLevelPaths;
+	for (const FilePath& path : paths)
+	{
+		bool addPath = true;
+		for (size_t i = 0; i < topLevelPaths.size(); i++)
+		{
+			if (topLevelPaths[i].contains(path))
+			{
+				addPath = false;
+				break;
+			}
+			else if(path.contains(topLevelPaths[i]))
+			{
+				topLevelPaths.erase(topLevelPaths.begin() + i);
+				break;
+			}
+		}
+		if (addPath)
+		{
+			topLevelPaths.push_back(path);
+		}
+	}
+	return topLevelPaths;
+}

src/lib/utility/utilityFile.h

@@ -0,0 +1,13 @@
+#ifndef UTILITY_FILE_H
+#define UTILITY_FILE_H
+
+#include <vector>
+
+#include "utility/file/FilePath.h"
+
+namespace utility
+{
+	std::vector<FilePath> getTopLevelPaths(const std::vector<FilePath>& paths);
+}
+
+#endif // UTILITY_FILE_H