feat: added keyword codec (partially works)

template/blocks.go

@@ -72,6 +72,12 @@ func parseShortTemplate(input string) (Block, error) {
 			switch strings.TrimSpace(option) {
 			case "number":
 				block.Codec = CodecNumber
+			case "text":
+				block.Codec = CodecText
+			case "hashtags":
+				block.Codec = CodecHashtags
+			default:
+				return block, fmt.Errorf("unknown codec option: %s", option)
 			}
 		}
 	}