Add installation and packaging targets

[HenryCai-st]

To reproduce:

docker build -t IMAGENAME .

docker run --rm -it --mount type=bind,source="$(pwd)",target=/mnt/cpack-exercise IMAGENAME

Inside Docker:

cd /mnt/cpack-exercise

mkdir build && cd build

cmake ..

make package

To install:

apt install ./cpackexample_0.1.0_amd64.deb

and test with:

cpackexample

The output should look like:

Let's fight with CMake, Docker, and some dependencies!

Solve Poisson problem with FEM using deal.II
FEM results available in `solution.vtk`. Try visualizing with Paraview.

Modify a flat set using boost container
Elements in s1: 1       2       3       4

Inspect the current directory using boost filesystem
"." is a directory containing:
    "CMakeCache.txt"
    "CMakeFiles"
    "CPackConfig.cmake"
    "CPackSourceConfig.cmake"
    "Makefile"
    "_CPack_Packages"
    "cmake_install.cmake"
    "cpackexample"
    "cpackexample-0.1.0-Linux.tar.gz"
    "cpackexample_0.1.0_amd64.deb"
    "install_manifest.txt"
    "libcpackexamplelib.a"
    "solution.vtk"

Initial lintian output

Fix 2 of them with writing longer description and stripping the file (was required anyway)
Final output