(Build) First pass over CMake

[therapon]

Description of changes:

1. Requirement for CMake moves to version 3.10 (from 3.5)
2. Adds a release target that builds and installs all libs and programs
3. Factors CMake code into a cmake top-level folder
4. Adds packaging for .deb and .tgz
5. Creates IonC:: scope for CMake targets
6. Expands source and header files, avoiding CMake GLOB which can cause issues with caching
7. Sets correct properties for libs and uses proper install destinations

This PR does remove the generation of a static library for ionc. There are a few followup PRs planned that will address a few things, including static library generation.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.