python3-eth-typing: new package

Add a recipe for eth-typing: common type annotations for ethereum
python packages.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

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

@@ -111,6 +111,7 @@ RDEPENDS:packagegroup-meta-python3 = "\
     python3-engineio \
     python3-et-xmlfile \
     python3-eth-hash \
+    python3-eth-typing \
     python3-evdev \
     python3-execnet \
     python3-fann2 \