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/interfaces/output.go

@@ -0,0 +1,14 @@
+package interfaces
+
+import (
+	"io"
+)
+
+type Formatter interface {
+	Format(object *ResourceList) (io.Reader, error)
+}
+
+type TableOutput interface {
+	ColumnNames() []string
+	Columns() []any
+}