Fixed Windows paths to start PHP server
Fixed Windows paths to start PHP server

Had to wrap double quotes on the PHP executable path and script path, since Windows CMD need this when the paths have space, like `Program Files` or `My Documents`.

The final output is expected like this:
```cmd
cmd /V:ON /E:ON /D /C ("C:\My PHP\PHP\7.3\php.exe" -S 127.0.0.1:8000 "C:\My Packages\TestPackage\vendor\orchestra\testbench-dusk\src/server.php") 1>"C:\Users\My User\AppData\Local\Temp\sf_proc_01.out" 2>"C:\Users\My User \AppData\Local\Temp\sf_proc_01.err"
```
orchestral/testbench-dusk,orchestral/testbench-dusk