Update build instructions for vcpkg

- include manual copy of grpc-cpp-plugin

doc/Install_develop.rst

@@ -22,7 +22,7 @@ which have ``make`` installed, type this in your command line terminal:
 Building with ``vcpkg``
 ~~~~~~~~~~~~~~~~~~~~~~~
 
-You can use the vcpkg package manager to install the dependencies (`vcpkg.json`). It's included as 
+Instead of Conan, you can use the vcpkg package manager to install the dependencies (`vcpkg.json`). It's included as 
 a submodule in the project. To install the dependencies, run the following commands:
 
 .. code:: console
@@ -31,12 +31,19 @@ a submodule in the project. To install the dependencies, run the following comma
    vcpkg/vcpkg install
 
 
+Copy the ``grpc-cpp-plugin`` to the build directory (TODO: This should ideally be done automatically by CMake): 
+
+.. code:: console
+
+   mkdir -p build/build_tools
+   cp vcpkg_installed/<os>/tools/grpc/grpc_cpp_plugin build/build_tools
+
 Then compile the project with CMake by including the vcpkg toolchain file:
 
 .. code:: console
 
    cd build
-   cmake -S .. -B . -DCMAKE_TOOLCHAIN_FILE=../vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-linux 
+   cmake -S .. -B . -DCMAKE_TOOLCHAIN_FILE=../vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-linux -DCMAKE_BUILD_TYPE=Release
    cmake --build .
 
 
@@ -49,7 +56,7 @@ package manager. The compiler must support the C++17 standard.
 1. clone/update the subrepo ``git submodule update --init proto``
 2. ``conan install . -s build_type=Release --build=missing``
 3. ``cd build/Release``
-4. ``cmake .``
+4. ``cmake -S ../.. -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=generators/conan_toolchain.cmake  -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release``
 5. ``cmake --build .``
 
 You may also want to install libcaosdb system-wide to

vcpkg.json

@@ -5,12 +5,7 @@
   "description": "C++ library for the CaosDB project",
   "license": "AGPL-3.0-or-later",
   "dependencies": [
-    "boost-beast",
-    "boost-filesystem",
-    "boost-json",
-    "boost-log",
-    "boost-smart-ptr",
-    "boost-thread",
+    "boost",
     "grpc",
     "protobuf",
     "zlib",