Terminal suggest: Respect executable bit for command (non-arg) completions

[Tyriar]

#282268 (comment)

Repro:

1. WSL remote, Linux or macOS
2. Open VS Code repo
3. Open terminal
4. cd scripts
5. Type ./ and hit ctrl+space to trigger suggest, 🐛 sh scripts should show up but not bat or js files.

Verify executable bit by checking x on left when running ls -la

[Tyriar]

Some relevant code here:

vscode/extensions/terminal-suggest/src/helpers/executable.ts

Lines 17 to 26 in e7fb282

	export async function isExecutableUnix(filePath: string): Promise<boolean> {
	try {
	const stats = await fs.stat(filePath);
	// On macOS/Linux, check if the executable bit is set
	return (stats.mode & 0o100) !== 0;
	} catch (error) {
	// If the file does not exist or cannot be accessed, it's not executable
	return false;
	}
	}

But currently this only applies when checking files on $PATH, not relative/absolute files.

[Tyriar]

I chose not to do the executable check for Windows as it's murkier what's executable and what's not. Can revise in future if needed.

[dbaeumer]

Not working for me. Here is what I see in WSL