[patterns] RFR: 8242624: Update .jcheck/conf for project Amber (patterns)

[Robin Westberg]

Hi all,

Please review this change that updates the jcheck configuration for use with Skara tooling.

Best regards,
Robin

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Commit messages:
 - Initial jcheck configuration for Skara tooling

Changes: https://git.openjdk.java.net/amber/pull/15/files
 Webrev: https://webrevs.openjdk.java.net/amber/15/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8242624
  Stats: 37 lines in 1 file changed: 35 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/amber/pull/15.diff
  Fetch: git fetch https://git.openjdk.java.net/amber pull/15/head:pull/15

PR: https://git.openjdk.java.net/amber/pull/15