set output to required for cargo/build pipeline

[kranurag7]

In some projects, we get a lot of outputs in ./target/release directory and if we don't set output then it tries to install a lot directories which is not possible via install executable.

• below is an example listing in /target/release directory.

~ # ls target/release/
build        deps         examples     incremental  probe        probe.d      pub          pub.d

• logs from melange pipeline

2024/10/23 21:14:59 WARN install: omitting directory 'target/release/build' uses=cargo/build
2024/10/23 21:14:59 WARN install: omitting directory 'target/release/deps' uses=cargo/build
2024/10/23 21:14:59 WARN install: omitting directory 'target/release/examples' uses=cargo/build
2024/10/23 21:14:59 WARN install: omitting directory 'target/release/incremental' uses=cargo/build

Fixes #1582

Note

We still need to think about how can we support installing more than one binaries from ./target/release directory but I'll open up another patch for that.

[ckoehler]

output could be a list of files or globs, to install multiple things, including libraries.