Added concurrent sync, added search page. Other small changes

Dockerfile

@@ -3,6 +3,7 @@ FROM golang:1.22.2-alpine as build_go
 COPY go.* /music-server/
 COPY ./cmd/*.go /music-server/cmd/
 COPY ./cmd/swagger /music-server/cmd/swagger
+COPY ./cmd/search /music-server/cmd/search
 COPY ./pkg /music-server/pkg/
 
 #WORKDIR /music-server/
@@ -27,4 +28,4 @@ ENV DB_NAME ""
 COPY --from=build_go /music-server/MusicServer .
 COPY ./songs/ ./songs/
 
-CMD ./MusicServer
+CMD ./MusicServer