Add Kazakh Arabic support about font-awami HOT 1 CLOSED

In the soon-to-be released version of Awami Nastaliq we have added the U+06AD character.

We have NOT added U+0676, U+0677, and U+0678 because the use of these characters is discouraged. See the Unicode codecharts annotation:

Use of these characters is discouraged. They were encoded for
Kazakh digraphs, but their decompositions do not reflect the
preferred order of representation. Accordingly, the
representation of these Kazakh digraphs should instead use
the preferred two-character spellings with the correct order of
elements.

Instead, we do support the Unicode recommended characters for those:

U+0674 U+0648
U+0674 U+06C7
U+0674 U+0649

ڭـ

from font-awami.