Detect soundtrack based on the release title

[gustavkj]

Closes: #105

Implements auto-detection of soundtrack releases based the title based on a wide range of common title patterns. Supports both common title formats in English (which often are used for releases in other languages as well), German, Swedish, and Norwegian.

I've added test cases for a wide variation of soundtracks.

In contrast to the existing patterns for detecting release group types from the title, the pattern does not always capture the type and as such I had to come up with a way of associating the pattern to a type. I think this can probably be useful for when detecting more release group types from titles in the future.

[gustavkj]

Sorry, I see the test case failed now. Must have been a last minute change I did, since titles starting and ending with OST or O.S.T. ought to be case sensitive (because Ost is a word in some languages, this would give more false positives than many of the other title formats) and as such now the case in-sensitive test is failing for those cases.

[kellnerd]

Thank you, that looks promising. I'm not at home right now, so it might take me until next week to review your contributions properly.