swift package add-dependency does not validate URLs

[MahdiBM]

Description

As the title says.

Expected behavior

URLs should be validated.

Actual behavior

URLs are not validated which results in invalid code.

Steps to reproduce

swift package add-dependency DiscordBM --from 1.12.0

Results in:

.package(url: "DiscordBM", from: "1.12.0"),

Note url: "DiscordBM" which is invalid.

Swift Package Manager version/commit hash

~ swift package --version                             
Swift Package Manager - Swift 6.0.0-dev

Swift & OS version (output of swift --version && uname -a)

swift-driver version: 1.109.2 Apple Swift version 6.0 (swiftlang-6.0.0.3.300 clang-1600.0.20.10)
Target: arm64-apple-macosx15.0
Darwin ---.local 24.0.0 Darwin Kernel Version 24.0.0: ---; root:xnu-11215.0.115.501.3~1/RELEASE_ARM64_T6000 arm64