Source Dependencies: Wired/Unnecessary `version {}` block

[StefMa]

I just read and test a little bit with the source dependencies feature.

While the syntax for the "git-tag as version" makes sense to me:

implementation 'org.gradle.cpp-samples:utilities:1.0'

the syntax for "other branches" does not:

dependencies {
    implementation('org.gradle.cpp-samples:utilities') {
        version {
            branch = 'release'
        }
    }
}

Expected Behavior

Branches (and maybe git-hashes (see #883 )) can be used as "normal gradle version":

implementation 'org.gradle.cpp-samples:utilities:[TAG,BRANCH OR HASH]'

Users may be confused about the new syntax (the version{} block) they have to use. Because a BRANCH or HASH would specify the version of the dependency.

Current Behavior

We have to add a version {} block to the configuration/dependency which defines the version of the dependency.

[big-guy]

This is intentional. This is part of some other work for defining version constraints that represent how that version should be interpreted.