Unshim cache serializer and other 311+-all code [databricks]

[jlowe]

Closes #5005. This performs the last remaining unshim work of #5005:

• Moves the ParquetCachedBatchSerializer out of the shims package
• Moves tests from the tests-spark310+ directory to the tests project and removes the tests-spark310+ project
• Adds the ColumnarToRowTransition trait to GpuColumnarToRowExec and removes GpuColumnarToRowTransitionExec
• Removes references to the sql-plugin/src/main/311+-all directory since no files remain after this PR
• Moves the contents of dist/unshimmed-spark311.txt to dist/unshimmed-common-from-spark311.txt
• Moves GpuJoinUtils out of the shims package.

Note that we could use Spark BuildSide instead of GpuBuildSide, but the wrapper here is very small, easy to maintain, and there are many references throughout the code to GpuBuildSide. We could do this as a followup if desired.

[jlowe]

build

[jlowe]

build

[jlowe]

build