Add support for NetBSD (#1989)

* Add support for NetBSD

* Build for NetBSD too as part of CI/CD pipeline

Author: iamleot

.github/workflows/main.yml

@@ -20,6 +20,7 @@ jobs:
           - darwin
           - freebsd
           - linux
+          - netbsd
           - openbsd
           - windows
         goarch:

internal/backend/time_bsd.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin || freebsd
+//go:build darwin || freebsd || netbsd
 
 package backend