Add Arduino and PlatformIO setting files

Author: realteck-ky

library.json

@@ -0,0 +1,19 @@
+{
+    "name": "gs2d",
+    "keywords": "serial, servo, motor, device, control, futaba, dynamixel",
+    "description": "gs2d (Generic Serial-bus Servo Driver) Library",
+    "repository":
+    {
+        "type": "git",
+        "url": "https://github.com/karakuri-products/gs2d-cpp"
+    },
+    "authors":
+    {
+        "name": "",
+        "url": "https://github.com/karakuri-products/gs2d"
+    },
+    "version": "0.0.1",
+    "license": "Apache-2.0",
+    "frameworks": "*",
+    "platforms": "*"
+}

library.properties

@@ -0,0 +1,9 @@
+name=gs2d
+version=0.0.1
+author=
+maintainer=
+sentence=gs2d (Generic Serial-bus Servo Driver) Library
+paragraph=gs2d is a library developed for the purpose of running commercially available serial bus RC servos (a.k.a. serial servos) using the same method and independent of protocol.
+category=Serial Servo Motor
+url=https://github.com/karakuri-products/gs2d
+architectures=*