fix: use process.exit if install fails (#633)

* fix: provide an exitCode if install fails

* Update src/installer/bin.ts

Co-Authored-By: Maël Nison <nison.mael@gmail.com>

Co-authored-by: Maël Nison <nison.mael@gmail.com>

src/installer/bin.ts

@@ -103,6 +103,7 @@ function run(): void {
     console.log(chalk.red(err.message.trim()))
     debug(err.stack)
     console.log(chalk.red(`husky > Failed to ${action}`))
+    process.exitCode = 1
   }
 }