Implements a binary renderer for Pkl values, which is a lossless capturing of Pkl data.
This follows the pkl binary format that is already used with `pkl server` calls, and is
made available as a Java API and also an in-language API.
Also, introduces a binary parser into the corresponding `PObject` types in Java.
This introduces a new `Bytes` standard library class, for working with
binary data.
* Add Bytes class to the standard library
* Change CLI to eval `output.bytes`
* Change code generators to map Bytes to respective underlying type
* Add subscript and concat operator support
* Add binary encoding for Bytes
* Add PCF and Plist rendering for Bytes
Co-authored-by: Kushal Pisavadia <kushi.p@gmail.com>
- Refactor code to use the following basic Java 17 features:
- pattern matching for instanceof
- @Serial annotation
- switch expressions
- enhanced switch statements
- StringBuilder.isEmpty()
- Replace two switch statements with simpler if statements.
- Rename a few local variables.
