[feat] support for all sqlite file extensions

[Shivansh-yadav13]

Issue Sqlite database support the following file extensions .sqlite, .sqlite3, .db, .db3, .s3db, .sl3 but sqlite-ui can only open files with .db extension.

Solution Make the db uri flexible and allow the users to pass in file name along with the extension https://github.com/Shivansh-yadav13/SQLite-UI/blob/ea5984d910546cb9086845572ec88fb6122f18f9/main.go#L19

[wliao008]

@Shivansh-yadav13 i'd propose to make this simpler, by passing in the complete path to the db file instead, so basically the db file can be named whatever and located in any directory and it should work.