ci: simplify github actions workflow

.github/workflows/go.yml

@@ -0,0 +1,19 @@
+name: Go
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.x'
+    - name: Test
+      run: go test -v ./...

README.md

@@ -1,7 +1,7 @@
 # movavg
 
 [![Go Reference](https://pkg.go.dev/badge/github.com/mxmCherry/movavg.svg)](https://pkg.go.dev/github.com/mxmCherry/movavg)
-[![Test](https://github.com/mxmCherry/movavg/actions/workflows/test.yml/badge.svg)](https://github.com/mxmCherry/movavg/actions/workflows/test.yml)
+[![Test](https://github.com/mxmCherry/movavg/actions/workflows/go.yml/badge.svg)](https://github.com/mxmCherry/movavg/actions/workflows/go.yml)
 [![Go Report Card](https://goreportcard.com/badge/github.com/mxmCherry/movavg)](https://goreportcard.com/report/github.com/mxmCherry/movavg)
 
 [Moving Average](https://en.wikipedia.org/wiki/Moving_average) calculator for Go (Golang) with focus on performance.