[Eva] add "loop unroll full" annotation

src/plugins/value/partitioning/partitioning_parameters.ml

src/plugins/value/utils/eva_annotations.ml

src/plugins/value/utils/eva_annotations.mli

tests/value/oracle/partitioning-annots.0.res.oracle

tests/value/oracle/partitioning-annots.1.res.oracle

tests/value/oracle/partitioning-annots.2.res.oracle

tests/value/oracle/partitioning-annots.3.res.oracle

tests/value/oracle/partitioning-annots.4.res.oracle

tests/value/oracle/partitioning-annots.5.res.oracle

tests/value/oracle/partitioning-annots.6.res.oracle

tests/value/partitioning-annots.c