[code-reflection] RFR: Model String Template [v7]

[Mourad Abbay]

> Model String Template

Mourad Abbay has updated the pull request incrementally with three additional commits since the last revision:

 - Add missing @param
 - Document ExtendedOps.stringTemplate and move ExtendedOps.StringTemplateOp closer to other operations in the source file
 - Make ExtendedOps.stringTemplate accept result type param

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Changes:
  - all: https://git.openjdk.org/babylon/pull/30/files
  - new: https://git.openjdk.org/babylon/pull/30/files/e0e09e8e..32246e78

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=30&range=06
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=30&range=05-06

  Stats: 178 lines in 4 files changed: 98 ins; 57 del; 23 mod
  Patch: https://git.openjdk.org/babylon/pull/30.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/30/head:pull/30

PR: https://git.openjdk.org/babylon/pull/30