Add database file status, health and md5

migrations/000002_create_files_table.up.sql

@@ -2,7 +2,9 @@
 CREATE TABLE IF NOT EXISTS files(
    id bigserial PRIMARY KEY,
    library_id bigint REFERENCES libraries(id) NOT NULL,
+   md5 uuid NOT NULL,
    size bigint NOT NULL,
-   missing boolean NOT NULL,
+   status smallint NOT NULL,
+   health smallint NOT NULL,
    path VARCHAR (500) NOT NULL
 );