Support optimize other file types

[rhodey]

Support optimize other file types by add --pattern command line option

sqlitesuperfs super1 /tmp/super1
sqlitesuperfs super1 /tmp/super1 --pattern db-journal,db
sqlitesuperfs super1 /tmp/super1 --pattern db-journal,db --pattern lock,off,log

Pattern defaults to "db-journal,db" and so running the first command is same as second

The third command is what you would use to optimize for SQLite and tinyraftplus at the same time

If you have a data structure which uses the file system and the data structure behaves similar to journal_mode DELETE or TRUNCATE you can use this feature. Pattern is a list of file extensions and the first needs to be the file extension of the lockfile

This PR also improves speed