added MacOS build and added build status badges on README

.github/workflows/rust-osx.yml

@@ -0,0 +1,19 @@
+name: Rust MacOS
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build
+        run: cargo build --release --verbose

README.md

@@ -1,5 +1,10 @@
 # Blue Engine
 
+[![Rust Linux](https://github.com/ElhamAryanpur/BlueEngine/actions/workflows/rust-linux.yml/badge.svg)](https://github.com/ElhamAryanpur/BlueEngine/actions/workflows/rust-linux.yml)
+[![Rust Windows](https://github.com/ElhamAryanpur/BlueEngine/actions/workflows/rust-win.yml/badge.svg)](https://github.com/ElhamAryanpur/BlueEngine/actions/workflows/rust-win.yml)
+[![Rust MacOS](https://github.com/ElhamAryanpur/BlueEngine/actions/workflows/rust-osx.yml/badge.svg)](https://github.com/ElhamAryanpur/BlueEngine/actions/workflows/rust-osx.yml)
+
+
 Blue Engine is a general-purpose, easy-to-use, fast, extendable, secure, and portable graphics engine written in rust. The engine can run on many popular back-end APIs including Vulkan, D3D-12, GL-ES 3, and Metal as well as Windows, Linux, and OSX/MacOS (needs testing, start an issue if you can help testing) to ensure cross-platform compatibility.
 
 * [Join our discord server](https://discord.gg/s7xsj9q)