fix(cli): desktop app now can be re-opened on Linux

[Andrew15-5]

Fixes #3322.

I added some tracing logs just in case someone else also needs them, like I did when debugging this issue.

IDK why this is added and so soon in the build cycle, but perhaps this can be replaced by the approach from this PR, but someone needs to check if replacing works.

dioxus/packages/cli/src/serve/mod.rs

Lines 110 to 113 in 74252f2

	// Kill any running executables on Windows
	if cfg!(windows) {
	runner.kill_all();
	}

[istudyatuni]

Another solution is just remove target file and then copy. It also seems simpler to implement

[Andrew15-5]

Interesting.

pros:

• only 2 cumulative operations in the code base, i.e., just need to add 1 operation to an existing one

cons:

• not an atomic operation, unlike mv (in Unix)

It doesn't require additional space for the 3rd binary. Well actually, since some process is still using the file, this would mean that after rm & cp there will be 2 visual copies and 1 more copy which is used by a process.

So this one is debatable. It will still require 2 operations for the Linux platform. And the code wouldn't become tremendously smaller, so I think we should keep the atomic approach.