[code-reflection] RFR: Support match all pattern

[Mourad Abbay]

Support match all pattern.
This PR is based on [227](https://github.com/openjdk/babylon/pull/227).

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Commit messages:
 - Support match all pattern for non-generic records
 - Update the result type of TypePatternOp
 - Keep Var that correspond to unnamed pattern variable
 - Rename BindingPatternOp to TypePatternOp
 - Pass null as binding-name when type pattern variable unnamed
 - Update effected tests
 - Update the model of pattern matching when pattern variable identifier is "_"

Changes: https://git.openjdk.org/babylon/pull/230/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=230&range=00
  Stats: 309 lines in 8 files changed: 81 ins; 0 del; 228 mod
  Patch: https://git.openjdk.org/babylon/pull/230.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/230/head:pull/230

PR: https://git.openjdk.org/babylon/pull/230