RFR: 8336031: Create implementation of NSAccessibilityStaticText protocol [v2]

[Alexander Zuev]

> Initial implementation of the protocol.

Alexander Zuev has updated the pull request incrementally with one additional commit since the last revision:

  Add comment about AccessibleRole enuM

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1507/files
  - new: https://git.openjdk.org/jfx/pull/1507/files/07c70037..ce4cc10b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1507&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1507&range=00-01

  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/1507.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1507/head:pull/1507

PR: https://git.openjdk.org/jfx/pull/1507