Deterministic/reproducible packaging for `Compress-PSResource`

Summary of the new feature / enhancement

Deterministic/reproducible builds are an undeniably important feature for auditability and security. Currently, Compress-PSResource doesn't provide support for that, and it should.

Currently, I post-process my packages to ensure fully reproducible output, which takes significant time in a build.

Proposed technical implementation details (optional)

There are a few sources of non-determinism I have observed in Compress-PSResource:

• The timestamps of files in the zipped package.
• The PSMDCP file name is non-deterministic. Consequently, the .rels file content is non-deterministic.
• The [Content_Types].xml content, notably the order of children, is non-deterministic. (? I remember observing this but couldn't give a stable reproduction at the moment.)

Suggestion.

1. Make Compress-PSResource deterministic by default. PSMDCP name can be a hash of non-.rels non-.psmdcp files, and [Content_Types].xml children should be sorted.
2. Provide a new parameter -Timestamp. When this parameter is set, all files in the package should use this timestamp.

Begin at the Compress-PSResource entry point and trace package generation, including timestamps, PSMDCP naming, .rels, and [Content_Types].xml ordering. Done means default output is reproducible and -Timestamp applies to all packaged files, with deterministic names and XML ordering.