Make sure "name" is generated for LibraryProperties

[gmazzap]

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines
• [x] Tests for the changes have been added (for bug fixes/features)
• [ ] Docs have been added/updated (for bug fixes/features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Feature.

What is the current behavior? (You can also link to an open issue here)

A library that does not define a extra.modularity.name property has an empty LibraryProperties::name().

What is the new behavior (if this is a feature change)?

In the case a library does not define a extra.modularity.name property, a name is calculated based on the Composer package name.

As an example, a library with a Composer name inpsyde/foo-bar-baz woudl have an auto-generated name Inpsyde Foo Bar Baz.

Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

No.

Other information:

QA is failing due to a deprecated Psalm configuration which I did not want to address in this PR being unrelated.