[code-reflection] Integrated: Added example-experiments to hat/bld and maven poms"

[Gary Frost]

Added the experiments dir to build system. Both the maven and hat/bld versions

Note : recent changes have broken nbody (opengl wrapper) looking at it now

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Commit messages:
 - Added example-experiments to hat/bld and maven poms"

Changes: https://git.openjdk.org/babylon/pull/481/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=481&range=00
  Stats: 29 lines in 5 files changed: 13 ins; 4 del; 12 mod
  Patch: https://git.openjdk.org/babylon/pull/481.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/481/head:pull/481

PR: https://git.openjdk.org/babylon/pull/481