See !78 (comment 1062052)

Added
- llvm-include-order
- llvm-namespace-comment
- cppcoreguidelines-explicit-virtual-functions

Open Points
- google-readability-avoid-underscore-in-googletest-name
- cppcoreguidelines-special-member-functions

* Move "doc", "include" and "test" to the root dir
* Rename to MantleAPI

Signed-off-by: Martin Stump <martin.stump@mercedes-benz.com>

Signed-off-by: Andreas Rauschert <andreas.rb.rauschert@bmw.de>

- time conversion didn't compile when used
- Added units for spline sections

Signed-off-by: Rene Paris <rene.paris@in-tech.com>

Replaced the types of all physical quantities related members/arguments with SI unit types as provided by the Units library.

* Underlying type of mantle_api::Vector3 needs to be a unit.
* Underlying type of mantle_api::Dimension3 is SI base unit [m].
* Underlying type of mantle_api::Orientation3 is limited to SI units [rad], [rad/s], [rad/s^2].
* Underlying type of mantle_api::SimulationTime is SI base unit [s].
* Units used in project "Open Simulation Interface (OSI)" were considered accordingly.

Signed-off-by: Jupp Tscheak's avatarJupp Tscheak <jupp.tscheak@daimler.com>

Signed-off-by: Arun Das <arun.das@bmw.de>

Signed-off-by: Arun Das <arun.das@bmw.de>

Signed-off-by: Arun Das <arun.das@bmw.de>