Add CI/CD

Add a skeleton CI/CD to build and run the performance test for DP3.

integration_tests/ddecal.parset

+avg.type=bdaaverager 
+avg.minchannels=1 
+avg.frequencybase=0.0 
+avg.maxinterval=75 
+avg.timebase=20000.0 
+steps=[solve] 
+solve.applycal.fastphase.correction=phase000 
+solve.applycal.parmdb=fast_phases.h5parm 
+solve.applycal.steps=[fastphase] 
+solve.beammode=array_factor 
+solve.datause=dual 
+solve.directions=[Patch_1014,Patch_1049,Patch_1051,Patch_1119,Patch_1122,Patch_1208,Patch_1372,Patch_1501,Patch_160,Patch_1669,Patch_18,Patch_2180,Patch_2357,Patch_2360,Patch_2409,Patch_2414,Patch_293,Patch_334,Patch_339,Patch_401,Patch_418,Patch_430,Patch_444,Patch_448,Patch_453,Patch_468,Patch_476,Patch_493,Patch_511,Patch_590,Patch_625,Patch_644,Patch_646,Patch_664,Patch_69,Patch_760,Patch_762,Patch_788,Patch_790,Patch_82,Patch_895,Patch_904,Patch_917,Patch_922,Patch_930,Patch_937,Patch_941,Patch_942,Patch_971,Patch_992] 
+solve.h5parm=slow_gain_separate_152.h5parm 
+solve.llssolver=qr 
+solve.maxiter=150 
+solve.mode=diagonal 
+solve.nchan=15 
+solve.onebeamperpatch=False 
+solve.parallelbaselines=False 
+solve.propagatesolutions=True 
+solve.sagecalpredict=False 
+solve.smoothnessconstraint=3000000.0 
+solve.solint=75 
+solve.solutions_per_direction=[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] 
+solve.solveralgorithm=directioniterative 
+solve.solverlbfgs.dof=200.0 
+solve.solverlbfgs.iter=4 
+solve.solverlbfgs.minibatches=1 
+solve.sourcedb=calibration_skymodel.txt 
+solve.stepsigma=0.1 
+solve.stepsize=0.02 
+solve.tolerance=0.005 
+solve.type=ddecal 
+solve.usebeammodel=True 
+solve.uvlambdamin=150 
\ No newline at end of file