feat(cmake): improved debian packaging

Improve Debian package generated by cmake's CPack:
* set architecture to `all`, making the .deb installable
  and thus Crow usable on other system archtectures like arm
* add `libasio-dev` as dependency (fixes #420)
* set section to `libdevel`
* disabled shlibdeps (not needed here)

CMakeLists.txt

@@ -140,8 +140,10 @@ set(CPACK_DEBIAN_PACKAGE_MAINTAINER "CrowCpp")
 set(CPACK_PACKAGE_VENDOR "CrowCpp")
 set(CPACK_PACKAGE_DESCRIPTION "A Fast and Easy to use C++ microframework for the web.")
 set(CPACK_PACKAGE_HOMEPAGE_URL "https://crowcpp.org")
+set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "all")
 set(CPACK_DEBIAN_PACKAGE_DEBUG OFF)
-set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "libasio-dev")
+set(CPACK_DEBIAN_PACKAGE_SECTION "libdevel")
 
 include(CPack)