cicd: add a new workflow called PR_Validation (#5546)
cicd: add a new workflow called PR_Validation (#5546)

* add PR_Validation workflow

* test

* test

* test

* test

* test

* test

* test

* add friesian ut to PR validation

* revert changes

* add dllib ut

* test

* revert
yangw1234/BigDL,yangw1234/BigDL,yangw1234/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,yangw1234/BigDL,intel-analytics/BigDL