Renaming fixture via argument attribute

[la10736]

In #107 we introduce fixture renaming. Here we implement the argument attribute version

#[rstest]
fn test_name(
    #[from(long_setup_name)]
    #[with("arg")]
    foo: FakeFoo) {
}

Pay attention: argument injection from compact version should refer to real fixture name and not to the shorter one: this because in case of reusing we would chose the short name for each test.

Question: what about of double rename?

First implementation can just raise error but we can admit a chain of renaming: this is a odd practice but the maybe is the implementation that make a sound syntax.

[la10736]

Ok... we cannot accept more than one: harder implementation and no real valid use cases.