Added Lithuanian hyphenation table.
Added Lithuanian hyphenation table.

The file is copied from ispell-lt repository (https://launchpad.net/ispell-lt), however, ispell-lt are not upstream themselves. It seems the current upstream is the TEX hyphenation patterns project (https://www.tug.org/tex-hyphen/). The file has been converted into libhyphen format by ispell-lt project.
The original copyright message and information follows:

% This file is part of hyph-utf8 package and resulted from
% semi-manual conversions of hyphenation patterns into UTF-8
% in October 2008 by Mojca & Arthur.
%
% Source available on:
% - http://www.vtex.lt/tex/littex/index.html
%
% Authors:
%
% First version in LT encoding (modified T1):
% - Vytas Statulevičius <vytas at vtex.lt>
% - Yannis Haralambous
%   (Vilnius, March 4, 1992)
% Conversion into Latin 7 and aditional support files (babel, fonts):
% - Sigitas Tolušis <sigitas at vtex.lt>
%   (2002-11-20)
% Adaptation for hyph-utf8:
% - Mojca & Arthur (see below), October 2008
%
% The copyright statement of this file is:
%
%    Do with this file whatever needs to be done in future for the sake of
%    "a better world" as long as you respect the copyright of original file.
%
% If you want to change this file, rather than uploading directly to CTAN,
% we would be grateful if you could send it to us (http://tug.org/tex-hyphen)
% or ask for credentials for SVN repository and commit it yourself;
% we will then upload the whole "package" to CTAN.
%
% For more unformation see
%
%    http://tug.org/tex-hyphen
%
%------------------------------------------------------------------------------
%
% A note about lefthyphenmin/righthyphenmin (by Sigitas, February 2009):
%
% At the moment the lefthyphenmin & righthyphenmin are both set to 2.
% The Lithuanian patterns were build earlier then the latest grammatical rules
% took place in 1997. At that time it was forbidden to leave one character at boundary.
% One may change it to one now, but from typographical point of view there is no need to do
% any changes. Even more, changing lefthyphen and righthyphen to 1 requires
% to review and maybe rebuild the patterns file.
%
%------------------------------------------------------------------------------

liblouis/liblouis,IndexBraille/liblouis,liblouis/liblouis,liblouis/liblouis,liblouis/liblouis,liblouis/liblouis,BueVest/liblouis,hammera/liblouis,hammera/liblouis,BueVest/liblouis,hammera/liblouis,IndexBraille/liblouis,hammera/liblouis,BueVest/liblouis,BueVest/liblouis,BueVest/liblouis,hammera/liblouis,IndexBraille/liblouis,IndexBraille/liblouis,hammera/liblouis,IndexBraille/liblouis,liblouis/liblouis,BueVest/liblouis