Add BindingMap helper class
Changing the mapping of keyed lists from List to Map made the baseline
generated builders hard to use, as there isn't an easy way to build
a map of entries in a fluent way.
BindingMap fills this role, providing both a direct way via
BindingMap.of(V...) as well as Builder-based interface via
BindingMap.Builder.
JIRA: MDSAL-553
Change-Id: Ieb3093c37b30f79666bffb50aa22a20922e41344
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
Signed-off-by: Illia <illia.ihushev@pantheon.tech>