[SPARK-14906][ML] Copy linalg in PySpark to new ML package

## What changes were proposed in this pull request?

Copy the linalg (Vector/Matrix and VectorUDT/MatrixUDT) in PySpark to new ML package.

## How was this patch tested?
Existing tests.

Author: Xiangrui Meng <meng@databricks.com>
Author: Liang-Chi Hsieh <simonh@tw.ibm.com>
Author: Liang-Chi Hsieh <viirya@gmail.com>

Closes #13099 from viirya/move-pyspark-vector-matrix-udt4.