Add tracecompass' Guava EEAs

[vorburger]

from https://github.com/tracecompass/tracecompass/tree/master/common/org.eclipse.tracecompass.common.core/annotations/com/google/common

for #10

[vorburger]

@kwin here is Guava from tracecompass as proposed in #10

@maggu2810 FYI (hey BTW if you accept the invite to join the Org I sent you then you can properly Review)

Nobody motivated to get what's left in tracecompass but not here yet over to this? ;-)

[vorburger]

Self merged due to no reactions from reviewers (which is PERFECTLY fine! Just writing this FTR.)