feat(tty): 实现发送SIGINT终止信号 (#952)

* 实现SIGINT终止信号传递

* 添加test_sigint测试程序

user/dadk/config/nova_shell-0.1.0.dadk

@@ -6,7 +6,7 @@
     "BuildFromSource": {
       "Git": {
         "url": "https://git.mirrors.dragonos.org.cn/DragonOS-Community/NovaShell.git",
-        "revision": "6c1ca14da7"
+        "revision": "b0dea7c16f"
       }
     }
   },

user/dadk/config/test_sigint-0.1.0.dadk

@@ -0,0 +1,24 @@
+{
+  "name": "test_sigint",
+  "version": "0.1.0",
+  "description": "一个用来测试sigint信号传递的app",
+  "task_type": {
+    "BuildFromSource": {
+      "Local": {
+        "path": "apps/test_sigint"
+      }
+    }
+  },
+  "depends": [],
+  "build": {
+    "build_command": "make install"
+  },
+  "install": {
+    "in_dragonos_path": "/bin"
+  },
+  "clean": {
+    "clean_command": "make clean"
+  },
+  "envs": [],
+  "target_arch": ["x86_64"]
+}