Initial commit of Model Manager implementation

[kkistm]

Contributed by STMicroelectronics

Signed-off-by: Landry Deslandes landry.deslandes@st.com Signed-off-by: Gabriel Gasnot gabriel.gasnot@st.com Signed-off-by: Thierry Le Gal thierry.le.gal@st.com Signed-off-by: Quentin Tomat quentin.tomat-ext@st.com Signed-off-by: Stefan Dirix sdirix@eclipsesource.com Signed-off-by: Eugen Neufeld eneufeld@eclipsesource.com Signed-off-by: Nina Doschek ndoschek@eclipsesource.com Signed-off-by: Christian W. Damus cdamus.ext@eclipsesource.com Signed-off-by: Olaf Lessenich olessenich@eclipsesource.com Signed-off-by: Tobias Ortmayr tortmayr@eclipsesource.com Signed-off-by: Camille Letavernier cletavernier@eclipsesource.com