chore: Move all integration tests to a single binary (#8093)

As per
https://matklad.github.io/2021/02/27/delete-cargo-integration-tests.html

Before that, there were 91 separate integration tests binary.

(As discussed on Discord — I've done the `uv` crate, there's still a few
more commits coming before this is mergeable, and I want to see how it
performs in CI and locally).

crates/uv-python/src/libc.rs

@@ -235,45 +235,4 @@ fn find_ld_path_at(path: impl AsRef<Path>) -> Option<PathBuf> {
 }
 
 #[cfg(test)]
-mod tests {
-    use super::*;
-    use indoc::indoc;
-
-    #[test]
-    fn parse_ldd_output() {
-        let ver_str = glibc_ldd_output_to_version(
-            "stdout",
-            indoc! {br"ld.so (Ubuntu GLIBC 2.39-0ubuntu8.3) stable release version 2.39.
-                Copyright (C) 2024 Free Software Foundation, Inc.
-                This is free software; see the source for copying conditions.
-                There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
-                PARTICULAR PURPOSE.
-            "},
-        )
-        .unwrap();
-        assert_eq!(
-            ver_str,
-            LibcVersion::Manylinux {
-                major: 2,
-                minor: 39
-            }
-        );
-    }
-
-    #[test]
-    fn parse_musl_ld_output() {
-        // This output was generated by running `/lib/ld-musl-x86_64.so.1`
-        // in an Alpine Docker image. The Alpine version:
-        //
-        // # cat /etc/alpine-release
-        // 3.19.1
-        let output = b"\
-musl libc (x86_64)
-Version 1.2.4_git20230717
-Dynamic Program Loader
-Usage: /lib/ld-musl-x86_64.so.1 [options] [--] pathname [args]\
-        ";
-        let got = musl_ld_output_to_version("stderr", output).unwrap();
-        assert_eq!(got, LibcVersion::Musllinux { major: 1, minor: 2 });
-    }
-}
+mod tests;