[code-reflection] RFR: New Examples: Dialects and Dynamic Function Builds

[Juan Fumero]

- `DialectSample`: Example of how to extends the code reflection `Op` to create a new dialect. 
- `DynamicFunctionBuild`: Example of how to create a new function dynamically to compute the inverse of a square root.  The code model is built dynamically for a new method and it is evaluated in the `Interpreter`.

How to run?


mvn clean package
java --enable-preview -cp target/crsamples-1.0-SNAPSHOT.jar oracle.code.samples.DialectSample
java --enable-preview -cp target/crsamples-1.0-SNAPSHOT.jar oracle.code.samples.DynamicFunctionBuild

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Commit messages:
 - minor comment
 - trip extra spaces
 - New example: building new functions dynamically with code reflection
 - [example] Fix printing for dialects
 - Code Reflection sample for creating new Ops for a dialect

Changes: https://git.openjdk.org/babylon/pull/549/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=549&range=00
  Stats: 432 lines in 3 files changed: 432 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/549.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/549/head:pull/549

PR: https://git.openjdk.org/babylon/pull/549