python3-eth-keyfile: new package

Add a recipe for eth-keyfile: a library for handling the encrypted
keyfiles used to store ethereum private keys.

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

meta-python/recipes-devtools/python/python3-eth-keyfile/0001-setup-don-t-use-setuptools-markdown.patch

@@ -0,0 +1,36 @@
+From 4348c72877e049804c7cdb7eec7a6bcd7ac2ea1d Mon Sep 17 00:00:00 2001
+From: Bartosz Golaszewski <brgl@bgdev.pl>
+Date: Wed, 11 May 2022 13:21:30 +0200
+Subject: [PATCH] setup: don't use setuptools-markdown
+
+This project is deprecated and irrelevant for the functionality of
+eth-keyfile. We don't support it in meta-python so just drop it from
+the dependencies.
+
+Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
+---
+ setup.py | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/setup.py b/setup.py
+index cbb7f4c..7702aa4 100644
+--- a/setup.py
++++ b/setup.py
+@@ -51,14 +51,12 @@ setup(
+         "A library for handling the encrypted keyfiles used to store ethereum "
+         "private keys."
+     ),
+-    long_description_markdown_filename='README.md',
+     author='Piper Merriam',
+     author_email='pipermerriam@gmail.com',
+     url='https://github.com/ethereum/eth-keyfile',
+     include_package_data=True,
+     install_requires=install_requires,
+     extras_require=deps,
+-    setup_requires=['setuptools-markdown'],
+     py_modules=['eth_keyfile'],
+     license="MIT",
+     zip_safe=False,
+-- 
+2.34.1
+