Add README badges and remove publish from validate workflow (#15)

Author: eliaspr

.github/workflows/validate.yaml

@@ -61,6 +61,3 @@ jobs:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
         run: 'dotnet-sonarscanner end /d:sonar.token="${{ secrets.SONAR_TOKEN }}"'
         working-directory: './src'
-      - name: 'Publish .NET solution'
-        run: 'dotnet publish --no-build -c Release /p:UseAppHost=false'
-        working-directory: './src'

README.md

@@ -2,6 +2,8 @@
 
 *An open-source tournament planning application for football clubs*
 
+[![.github/workflows/validate.yaml](https://github.com/turnierplan-NET/turnierplan.NET/actions/workflows/validate.yaml/badge.svg)](https://github.com/turnierplan-NET/turnierplan.NET/actions/workflows/validate.yaml) [![Code Smells](https://sonarcloud.io/api/project_badges/measure?project=turnierplan-NET_turnierplan.NET&metric=code_smells)](https://sonarcloud.io/summary/new_code?id=turnierplan-NET_turnierplan.NET) [![Bugs](https://sonarcloud.io/api/project_badges/measure?project=turnierplan-NET_turnierplan.NET&metric=bugs)](https://sonarcloud.io/summary/new_code?id=turnierplan-NET_turnierplan.NET) [![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=turnierplan-NET_turnierplan.NET&metric=ncloc)](https://sonarcloud.io/summary/new_code?id=turnierplan-NET_turnierplan.NET) [![Coverage](https://sonarcloud.io/api/project_badges/measure?project=turnierplan-NET_turnierplan.NET&metric=coverage)](https://sonarcloud.io/summary/new_code?id=turnierplan-NET_turnierplan.NET)
+
 ## Introduction
 
 **turnierplan.NET** is mostly written in C# using [.NET](https://dotnet.microsoft.com/). This includes the core logic, the backend API and database connection as well as all publicly visible web pages. In addition, it serves the *turnierplan.NET portal*, the client application for authenticated users, based on the [Angular](https://angular.dev/) framework.