added test-matrix file for testing chol solve forwardsolve etc
added test-matrix file for testing chol solve forwardsolve etc

nimble-dev/nimble,nimble-dev/nimble,nimble-dev/nimble,NLMichaud/nimble,NLMichaud/nimble,nxdao2000/nimble,nxdao2000/nimble,NLMichaud/nimble,nimble-dev/nimble,NLMichaud/nimble,nxdao2000/nimble,nxdao2000/nimble,nimble-dev/nimble