add httpx recipe

Author: DexerBR

pythonforandroid/recipes/httpx/__init__.py

@@ -0,0 +1,9 @@
+from pythonforandroid.recipe import PythonRecipe
+
+class HttpxRecipe(PythonRecipe):
+    name = 'httpx'
+    version = '0.28.1'
+    url = 'https://pypi.python.org/packages/source/h/httpx/httpx-{version}.tar.gz'
+    depends = ['httpcore', 'h11', 'certifi', 'idna', 'sniffio']
+
+recipe = HttpxRecipe()