Visual Studio Code - Include Path Problems Header Files C++ (MinGW)

I am pretty new to programm in C++ so please don't judge my problems with setting up my "Visual Studio Code" environment. I am trying to use the blaze math packages to solve quadratic programming problems. With the MinGW GCC I can compile the testfiles of blaze successfully via cmd and thus I want to use the GCC for VS Code.

OS: Windows 10.0.19041

GCC: gcc (x86_64-posix-seh-rev0, Built by MinGW-W64 project) 7.3.0 || (cmd: gcc --version)

VS Code Extensions: C/C++ 0.27.1

Firstly I went through the VS Code tutorial for MinGW: https://code.visualstudio.com/docs/cpp/config-mingw

This worked fine so I can easily compile my helloworld.cpp. The resulting tasks.json file looks like this tasks.json.

As my package manager (for blaze or other packages) i use the vspkg-git: https://docs.microsoft.com/en-us/cpp/build/vcpkg?view=msvc-160 Thus I am programming on Windows I can't use the "integrate" command to add the path to the includepath. So I have to do this manually.

My packages are in the folder with the absolute path

C:\Users\Johannes\Desktop\Masterthesis\vcpkg\vcpkg\packages

So I added the path on the "c_cpp_propertier.json"-file

{
"configurations": [
    {
        "name": "GCC",
        "defines": [
            "_DEBUG",
            "UNICODE",
            "_UNICODE"
        ],
        "cStandard": "c11",
        "cppStandard": "c++17",
        "intelliSenseMode": "gcc-x64",
        "includePath": [
            "${workspaceFolder}",
            "C:/Users/Johannes/Desktop/Masterthesis/vcpkg/vcpkg/packages/**"
        ],
        "compilerPath": "C:/Program Files/mingw-w64/x86_64-7.3.0-posix-seh-rt_v5-rev0/mingw64/bin/g++.exe",
        "browse": {
            "path": []
        }
    }
],
"version": 4
}

In the folder are several packages therefor I added the "/**" at the end of the path to enable the recursive search for header files.

My 'helloworld.cpp' file looks like this

#include <iostream>
#include <vector>
#include <string>
//#include <blaze/Math.h>

using namespace std;

int main()
{
vector<string> msg {"Hello", "C++", "World", "from", "VS Code", "and the 
C++ extension!"};

for (const string& word : msg)
{
    cout << word << " ";
}
cout << endl;
}

My problem is that when I try to include a header-file from this path for example Math.h Visual Studio throws an Error

blaze/Math.h: No such file or directory

But when I right-click on the include and click "Go to Definition" VS Code opens the file. Optionbar and the opened file.

The Log-Diagnostics gives that information.

I guess someone that has experience with MinGW and additional packages in VS Code will solve that problem very simple, but I have read nearly every thread about those problems and didn't find anything matching mine.