Add solver for Sendai-Miyagi (#171)

* Add solver for Sendai-Miyagi

* format

* enable ReasonVerifier in prod

* fix order

Author: semiexp

cspuz_rs_puzzles/src/puzzles/mod.rs

@@ -103,6 +103,7 @@ pub mod sasahigane;
 pub mod school_trip;
 pub mod scrabble;
 pub mod seiza;
+pub mod sendai;
 pub mod shakashaka;
 pub mod shikaku;
 pub mod shimaguni;