DRILL-8424: Accommodate RexBuilder changes made for SAFE_CAST

[jnturton]

DRILL-8424: Accommodate RexBuilder changes made for SAFE_CAST

Description

Resolves the current CI test failues affecting decimal and empty-literal-to-null casting. Also incorporates upstream syntax additions in Drill's Parser.jj which can only be dropped when CALCITE-5579 is resolved.

• Incorporate method signature changes in RexBuilder made by CALCITE-5557.
• Fix float rounding error in TestCastFunctions.testCastFloatDecimalOverflow.
• Incorporate Calcite parser changes.
  • [CALCITE-5557] Add SAFE_CAST function (enabled in BigQuery library)
  • [CALCITE-5548] Add MSSQL-style CONVERT function (enabled in MSSql library)
  • [CALCITE-5554] In EXTRACT function, add DAYOFWEEK and DAYOFYEAR as synonyms for DOW, DOY
• Ignore .mvn/maven.config.
• Upgrade Apache RAT plugin.
• Upgrade os-maven-plugin.
• Move distro tarball to the Maven install phase.

Documentation

SAFE_CAST to be documented and relevant syntax additions to be documented.

Testing

Failing tests now pass.

[jnturton]

I botched the "Move distro tarball to the Maven install phase" commit but that's a one-liner and unrelated to any unit tests so I'll let the test tuns here complete before pushing its fix.