hunspell: initial add 1.3.3

There are at least three different places where hunspell recipe is found [1-3]. Let's
move it to a more common place to avoid further redundancy.

Native extension is required for libreoffice-native in meta-office [4].

[1] https://github.com/openwebos/meta-webos/blob/master/recipes-upstreamable/hunspell/hunspell_1.3.2.bb
[2] https://github.com/webOS-ports/meta-webos-ports/blob/master/meta-luneos/recipes-upstreamable/hunspell/hunspell_1.3.2.bb
[3] https://github.com/schnitzeltony/meta-office/blob/master/recipes-support/hunspell/hunspell_1.3.3.bb
[4] https://github.com/schnitzeltony/meta-office



Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>