RFR: 8221708 Update Eclipse project files

[John Hendrikx]

See https://bugs.openjdk.org/browse/JDK-8221708

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Commit messages:
 - Fix line endings for Eclipse project files
 - Add Eclipse encoding files (UTF8)
 - Add buildship Eclipse files to all gradle projects
 - Remove Eclipse files from non-projects
 - Fix 3DLighting project
 - Add swt-debug jar to manualTests-swt
 - Rename top level project to jfx in Eclipse project files
 - Add project files for manual tests
 - Created Eclipse projects for all the testapps
 - Remove reference to Java 11 container
 - ... and 6 more: https://git.openjdk.org/jfx/compare/b3eec1d6...57048ba6

Changes: https://git.openjdk.org/jfx/pull/930/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=930&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8221708
  Stats: 2070 lines in 123 files changed: 1810 ins; 244 del; 16 mod
  Patch: https://git.openjdk.org/jfx/pull/930.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/930/head:pull/930

PR: https://git.openjdk.org/jfx/pull/930