Update to recent vcpkg version

In particular: 
* Use a recent commit of vcpkg, microsoft/vcpkg@28ab0b1 that contains microsoft/vcpkg#10644 
* Update qt5 to build with the `latest` feature, that install qt 5.14 that should be the first version of qt completely relocatable ( https://www.qt.io/blog/qt-is-relocatable )  
* Substitute opencv3 with opencv, that install opencv4 
* Install also `asio`, `boost-asio`, `boost-process`, `boost-dll`,  `boost-filesystem` and `boost-system`, to fix #7 
* As the newer version of vcpkg are affected by the bug microsoft/vcpkg#10119, clone the `robotology-vcpkg-binary-ports` repo in `C:/robotology`, so that it will be contained in the same archive  used to distribute the vcpkg dependencies .

.github/workflows/ci.yml

@@ -34,16 +34,20 @@ jobs:
         wget https://github.com/robotology/robotology-vcpkg-binary-ports/releases/download/storage/robotology-vcpkg-2019.10-ace.zip
         7z x robotology-vcpkg-2019.10-ace.zip
         rm robotology-vcpkg-2019.10-ace.zip
+        cd C:/robotology/vcpkg
+        # Update vcpkg to a newer commit
+        git pull
+        git checkout 28ab0b15cd7cdc1004cac9a28a5ecab198c161b9
         C:/robotology/vcpkg/bootstrap-vcpkg.sh
-        git clone https://github.com/robotology-dependencies/robotology-vcpkg-binary-ports C:/robotology-vcpkg-binary-ports
-        cd C:/robotology-vcpkg-binary-ports
+        git clone https://github.com/robotology-dependencies/robotology-vcpkg-binary-ports C:/robotology/robotology-vcpkg-binary-ports
+        cd C:/robotology/robotology-vcpkg-binary-ports
         git checkout v0.1.0
 
     - name: Install vcpkg ports
       shell: bash
       run: |
         # TinyXML is not installed as a workaround for https://github.com/robotology/ycm/pull/296
-        C:/robotology/vcpkg/vcpkg.exe --overlay-ports=C:/robotology-vcpkg-binary-ports install --triplet x64-windows ace freeglut gsl eigen3 esdcan-binary ode openssl libxml2 eigen3 opencv3 matio sdl1 sdl2 qt5-base ipopt-binary qt5-declarative qt5-multimedia qt5-quickcontrols2 sqlite3[core,tool]
+        C:/robotology/vcpkg/vcpkg.exe --overlay-ports=C:/robotology/robotology-vcpkg-binary-ports install --triplet x64-windows ace asio boost-asio boost-process boost-dll boost-filesystem boost-system freeglut gsl eigen3 esdcan-binary ode openssl libxml2 eigen3 opencv matio sdl1 sdl2 qt5-base[latest] ipopt-binary qt5-declarative qt5-multimedia qt5-quickcontrols2 sqlite3[core,tool]
         # Remove temporary files https://github.com/Microsoft/vcpkg/blob/master/docs/about/faq.md#how-can-i-remove-temporary-files
         rm -rf C:/robotology/vcpkg/buildtrees 
         rm -rf C:/robotology/vcpkg/packages