Add bar lines and improve test coverage

Add variants of [|: and S.|: annotated with -|| to parallel .|:-||.

Add bar lines for coincident Fine and in-staff segno.

Replace regression test double-repeat-default-volta with bar-line-define-repeat. The new test adds coverage for overriding startRepeatType and endRepeatType and using user-defined bar lines.

Add tests bar-line-built-in-*.ly using the \bar command with all built-in repeat and segno bar types at the beginning, middle, and end of a system. Delete a few tests that covered a subset of these.