RFR: 8358772: Template-Framework Library: Primitive Types [v3]

[Emanuel Peter]

> I would like to add primitive type support to the template framework library.
> 
> In follow-up work, we will use these types in random expression generation - but they can also already be useful on their own now.
> 
> I encountered an issue with some methods that return `Token` from the `TemplateFramework`, such as `Hook.insert` and `addDataName`. Since `Token` was package private, this class could not be used in some places where automatic type inference is required. I now refactored the code, so that the `Token` is just an empty interface, and all the methods are moved to a separate class `TokenParser`.
> 
> Original experiments from here: https://github.com/openjdk/jdk/pull/23418

Emanuel Peter has updated the pull request incrementally with one additional commit since the last revision:

  review suggestions applied

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25672/files
  - new: https://git.openjdk.org/jdk/pull/25672/files/4c8d6312..a1c84e80

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25672&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25672&range=01-02

  Stats: 18 lines in 2 files changed: 0 ins; 4 del; 14 mod
  Patch: https://git.openjdk.org/jdk/pull/25672.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25672/head:pull/25672

PR: https://git.openjdk.org/jdk/pull/25672