added vscode configs

.vscode/arduino.json

@@ -0,0 +1,7 @@
+{
+    "board": "arduino:avr:nano",
+    "configuration": "cpu=atmega328",
+    "port": "/dev/ttyUSB0",
+    "sketch": "alarm/main/main.ino",
+    "programmer": "AVR ISP"
+}

.vscode/c_cpp_properties.json

@@ -0,0 +1,20 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "c11",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "clang-x64",
+            "includePath": [
+                "~/.arduino15/packages/arduino/tools/**",
+                "~/.arduino15/packages/arduino/hardware/avr/1.6.23/**"
+            ],
+            "forcedInclude": [
+                "~/.arduino15/packages/arduino/hardware/avr/1.6.23/cores/arduino/Arduino.h"
+            ]
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+  "files.associations": {
+    "cstddef": "cpp"
+  }
+}