python3-asyncvarlink: add recipe

asyncio Varlink binding with file-descriptor passing; interfaces are
derived from annotated Python classes.

AI-Generated: Claude Opus 5 (Claude Code)
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-python/recipes-core/packagegroups/packagegroup-meta-python.bb

@@ -39,6 +39,7 @@ RDEPENDS:packagegroup-meta-python3 = "\
     python3-asttokens \
     python3-async-timeout \
     python3-asyncio-glib \
+    python3-asyncvarlink \
     python3-attr \
     python3-autobahn \
     python3-automat \