This change updates two formatting options:
- pointers and references will be left-aligned (`int* foo`). Previously
we had the setting to left-align but that got ignored because of the
`DerivePointerAlignment` setting which tries to use the style used
elsewhere in the file, which is not good to get consistent styling.
- no longer always add a line break after the return type of a function,
only if type and name don't fit in a line. Unfortunately clang-format
doesn't have a setting to only add the line break if the method
definition is too long to fit in one line. The new setting matches the
alternative formatting from our style guide.
