Change to PlatformIO project (#63)

* Change to PlatformIO project

* Bump version to 1.0.3

* Update version in README.md

Author: CelliesProjects

README.md

@@ -4,12 +4,13 @@
 [![Release](https://img.shields.io/github/v/release/CelliesProjects/OpenStreetMap-esp32)](https://github.com/CelliesProjects/OpenStreetMap-esp32/releases/latest)
 [![Issues](https://img.shields.io/github/issues/CelliesProjects/OpenStreetMap-esp32)](https://github.com/CelliesProjects/OpenStreetMap-esp32/issues)
 [![PlatformIO](https://img.shields.io/badge/PlatformIO-Compatible-green?logo=platformio)](https://registry.platformio.org/libraries/celliesprojects/openstreetmap-esp32)
-[![arduino-library-badge](https://www.ardu-badge.com/badge/OpenStreetMap-esp32.svg?)](https://docs.arduino.cc/libraries/openstreetmap-esp32/)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/0961fc2320cd495a9411eb391d5791ca)](https://app.codacy.com/gh/CelliesProjects/OpenStreetMap-esp32/dashboard?utm_source=gh&utm_medium=referral&utm_content=&utm_campaign=Badge_grade)
 
 This library provides a [OpenStreetMap](https://www.openstreetmap.org/) (OSM) map fetching and tile caching system for ESP32-based devices.  
 Under the hood it uses [LovyanGFX](https://github.com/lovyan03/LovyanGFX) and [PNGdec](https://github.com/bitbank2/PNGdec) to do the heavy lifting.
 
+This library is **PlatformIO only** due to use of modern C++ features. The Arduino IDE is **not** supported.
+
 [![map](https://github.com/user-attachments/assets/39a7f287-c59d-4365-888a-d4c3f77a1dd1 "Click to visit OpenStreetMap.org")](https://www.openstreetmap.org/)
 
 A map is composed from downloaded OSM tiles and returned as a LGFX sprite.
@@ -202,7 +203,7 @@ void loop()
 
 ```bash
 lib_deps =
-    celliesprojects/OpenStreetMap-esp32@^1.0.2
+    celliesprojects/OpenStreetMap-esp32@^1.0.3
     lovyan03/LovyanGFX@^1.2.0
     bitbank2/PNGdec@^1.0.3  
 ```

library.json

@@ -0,0 +1,42 @@
+{
+    "name": "OpenStreetMap-esp32",
+    "version": "1.0.3",
+    "description": "This library provides a OpenStreetMap (OSM) map fetching and caching system for ESP32-based devices.",
+    "keywords": [
+        "OpenStreetMap",
+        "GPS",
+        "LovyanGFX",
+        "ESP32"
+    ],
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/CelliesProjects/OpenStreetMap-esp32"
+    },
+    "authors": [
+        {
+            "name": "CelliesProjects"
+        }
+    ],
+    "frameworks": [
+        "arduino"
+    ],
+    "platforms": [
+        "espressif32"
+    ],
+    "dependencies": [
+        {
+            "name": "LovyanGFX",
+            "version": "https://github.com/lovyan03/LovyanGFX.git#1.2.7"
+        },
+        {
+            "name": "PNGdec",
+            "version": "https://github.com/bitbank2/PNGdec.git#28b221d"
+        }
+    ],
+    "build": {
+        "flags": [
+            "-std=gnu++17"
+        ]
+    },
+    "license": "MIT"
+}