Added format dependent test for the setElement function. This is format dependent, because setElement won't work without setting rowLengths.

	Added TODOs to implement rowPointer test for
setCompressedRowLengths and setDimensions test functions.

assuming that getRowLength() works correctly and doesn't need to be
tested.

Added test for setDimensions function. This test is correct assuming that getRows() and getColumns() work correctly and don't need to be tested.

Divided testGetType into separate functions, one for Host and one for CUDA, to avoid non-CUDA systems having difficulties.

	Was using EXPECT_STREQ, instead of EXPECT_EQ.

	Create the testGetType and its corresponding gtest.

Edited formatting in SparseMatrxTest.h

	Initial import of .cpp .cu .h files for the new test.

	Reformatted testCopyAssignment and testConversion to work with SCOPED_TRACE.

	Renamed different tested and copied matrices in the testCopyAssignment and testConversion functions.

	Set appropriate row lengths in the setup of the Uneven Row Size matrix.

	Added setup and check for UnevenRowSizeMatrix of size 10x6.
	Commented out their use in the testCopyAssigment and testConversion
functions.

	Cleaned up the testCopyAssignment and testConversion functions to enable clean use of the the Anti Tri Diag Matrix setup and check.

	Changed the name of "setupMatrix" to "setupTriDiagMatrix".
	Added a setup and check for the AntiTrigDiagMatrix.
	Commented out the TriDiagMatrix setups and checks in order to verify the validity of the new AntiTriDiagMatrix.

It does not have any effect on recent builds and we explicitly set
-march=native -mtune=native later in the file.

Distributed linear solvers

See merge request mmg/tnl-dev!8