Create implementation of the TabGroup protocol and assign it to TAB_PANE and PAGINATION roles.
------------- Commit messages: - 8359257: Create accessibility protocol for TabGroup component Changes: https://git.openjdk.org/jfx/pull/1823/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1823&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8359257 Stats: 113 lines in 3 files changed: 111 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jfx/pull/1823.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1823/head:pull/1823 PR: https://git.openjdk.org/jfx/pull/1823
