tools: import latest linux clang-format config w/ FRR mods

tools: import latest linux clang-format config w/ FRR mods

We modify the following from Linux Style:

    AlignEscapedNewlines: Left -> Right
    AlignTrailingComments: false -> true
    AlignConsecutiveMacros: false -> true
    ForEachMacros (replace linux with ours)

Don't break a string into multi-string-fragments

    PenaltyBreakString: 200

Allow going past the ColumnLimit to keep function arguments aligned
with the open parenthesis.

    PenaltyBreakBeforeFirstCallParameter: 200

Signed-off-by: Christian Hopps <chopps@labn.net>