RFR: 8327390: JitTester: Implement temporary folder functionality

[Evgeny Nikitin]

The JITTester relies on standard OS / Java library functionality to create temporary folders and never cleans them.

This creates problems in CI machines and also complicates problems investigation. We need to have a dedicated TempDir entity that we could adjust during problems investigations and development. It can also be a good place for various file-related activities, like executing FailureHandler.

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Commit messages:
 - 8327390: JitTester: Implement temporary folder functionality

Changes: https://git.openjdk.org/jdk/pull/18128/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18128&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327390
  Stats: 76 lines in 4 files changed: 63 ins; 4 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/18128.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18128/head:pull/18128

PR: https://git.openjdk.org/jdk/pull/18128