feat: unifood base with GET dishes (#1)

Features:
- CLI structure with verbs and resources
- Application config and parameters
- Output formatters
- Initial resource: dishes

Reviewed-on: #1
Co-authored-by: bdoerfchen <git@bissendorf.co>
Co-committed-by: bdoerfchen <git@bissendorf.co>

core/output/go.go

@@ -0,0 +1,15 @@
+package output
+
+import (
+	"fmt"
+	"io"
+	"strings"
+
+	"git.bissendorf.co/bissendorf/unifood/m/v2/core/interfaces"
+)
+
+type GoFormatter struct{}
+
+func (f *GoFormatter) Format(list *interfaces.ResourceList) (io.Reader, error) {
+	return strings.NewReader(fmt.Sprintf("%#v", list)), nil
+}