Implement Server (#1)

- Generic Server struct
- TCP and UDP

Reviewed-on: #1

.gitea/workflows/jobs.yaml

@@ -14,7 +14,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libbsd-dev cmake build-essential
+          sudo apt-get install -y libbsd-dev cmake build-essential netcat
 
       - name: Build and test
         run: |