New RCG parts/common logic

Add atan2

Code

/opt/rtcds/userapps/release/cds/common/src/ATAN2.c

Add spiunwrap

Rename to phaseunwrap

Code

/opt/rtcds/userapps/release/isi/s1/src/spiunwrap.c

Status

• Add atan2 part/logic
• Add atan2 unit test
• Add unwrapPhase part/logic
• Add unwrapPhase unittest
• Test new part graphics in fresh clone of repo
• The old code does pi wrapping, buy scipy defaults to 2pi wrapping, do we need to allow the user to set?