Add initial windows runtime setup (#292)

* add initial windows runtime setup

* add cool console output

* doctor support windows base

* add `add-path` and `remove-path` for bin/setup-runtime

* fix composer.ps1 path

* add windows system util

* add windows cmd and doctor base check

* add windows fallback for laravel/prompts

* cd fix [skip ci]

* dir separator and typo fix [skip ci]

src/SPC/command/DoctorCommand.php

@@ -75,8 +75,9 @@ class DoctorCommand extends BaseCommand
         } catch (\Throwable $e) {
             $this->output->writeln('<error>' . $e->getMessage() . '</error>');
 
-            pcntl_signal(SIGINT, SIG_IGN);
-
+            if (extension_loaded('pcntl')) {
+                pcntl_signal(SIGINT, SIG_IGN);
+            }
             return static::FAILURE;
         }