Excise MatrixAlgebra module entirely to use MatrixAlgebraKit #673

Job	Run time
Julia 1 - ubuntu-latest -	47m 28s
Julia lts - macOS-latest -	27m 5s
Julia lts - windows-latest -	44m 53s
Julia lts - ubuntu-latest -	44m 34s
Julia 1 - windows-latest -	47m 21s
Julia 1 - macOS-latest -	35m 37s
Julia nightly - ${{ matrix.os }} - ${{ matrix.arch }}	1s
	4h 6m 59s

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