Fix conan create on Windows

Summary

Fixes:

• #101 (closed)
• #102 (closed)
• #103 (closed)

Creating the conan package and installing on Windows had some issues. This MR fixes that.

Focus

• conan create now works on Windows without errors (e.g. via .\make.ps1 conan-create)
• cmake --install results in output files being installed to %appdata%\LinkAhead, e.g. C:\Users\Joscha\AppData\Roaming\LinkAhead

Test Environment

Regular

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doc/Install_develop.rst

@@ -65,7 +65,7 @@ commands:
    vcpkg/vcpkg install
 
 
-Copy the ``grpc-cpp-plugin`` to the build directory (TODO: This should ideally be done automatically by CMake): 
+Copy the ``grpc-cpp-plugin`` to the build directory (TODO: This should ideally be done automatically by CMake):
 
 .. code:: console
 
@@ -83,7 +83,7 @@ Then compile the project with CMake by including the vcpkg toolchain file:
 Alternatively, on Linux, you can use the provided `Makefile` targets
 
 .. code:: console
-         
+
    make vcpkg-build-release
 
 
@@ -108,7 +108,7 @@ How to build on Windows
 We use `Visual Studio
 2022 <https://visualstudio.microsoft.com/de/vs/features/cplusplus/>`__
 as compiler. We use `cmake <https://cmake.org/download/>`__ as build
-tool, which can be installed together with Visual Studio. 
+tool, which can be installed together with Visual Studio.
 
 1. Install Python and create a virtual environment with the dependencies in
    `requirements.txt`.
@@ -128,7 +128,7 @@ Troubleshooting
 ERROR: The default build profile '~/.conan2/profiles/default' doesn't exist
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Follow the instructions and run 
+Follow the instructions and run
 
 .. code:: console
 
@@ -175,6 +175,18 @@ to, e.g., ``std::string_view`` being unavailable, try specifying the cpp
 standard manually by
 ``conan install .. [other options] -s "compiler.cppstd=17"``.
 
+Problems with symlinks on Windows
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If you're experiencing problems with symlinks, e.g., errors like ``
+\linkahead-cpplib\test_package\test_info.cpp(1,1): error C2059: syntax
+error '.'`` when running ``conan create`` on Windows you might need to
+activate the Windows Development Mode and adjust yor git config to
+allow symlinks as described in `this Stackoverflow post
+<https://stackoverflow.com/questions/5917249/git-symbolic-links-in-windows/59761201#59761201>`_. Without
+development mode and the proper git configuration, windows treats
+symlinks as text files instead of links.
+
 Client Configuration
 --------------------
 
@@ -220,7 +232,7 @@ For the tests the build type has to be Debug. As a shorthand you can run ``make
 test``. If you want to build manually, follow these steps:
 
 1. ``conan install . -s build_type=Debug --build=missing``
-2. ``cd build/Debug`` 
+2. ``cd build/Debug``
 3. ``cmake -S ../.. -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=generators/conan_toolchain.cmake  -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Debug``
     - If your clang-format version is too old, formatting, linting etc. can
       be skipped: