Python SDK Update (#523)

* added first iteration decorator for zrok and example flask server

* update requirements. Add context managing for share and access. Updated pastebin example to better cleanup

* setup and sample tweaks

* small linting updates and example changes

* A few small fixes

* fix long description

* Update the ignore file.
Considering moving location of this.

* Added flake8 linting for builds

* use python 3.10

* move setup python to its own block

* added back in the py name

* update changelogs and add readme

---------

Signed-off-by: Cam Otts <otts.cameron@gmail.com>
Co-authored-by: Kenneth Bingham <kenneth.bingham@netfoundry.io>

sdk/python/examples/http-server/server.py

@@ -0,0 +1,48 @@
+#!python3
+from flask import Flask
+import sys
+import zrok
+from zrok.model import ShareRequest
+import atexit
+
+app = Flask(__name__)
+zrok_opts = {}
+bindPort = 18081
+
+
+@zrok.decor.zrok(opts=zrok_opts)
+def runApp():
+    from waitress import serve
+    # the port is only used to integrate Zrok with frameworks that expect a "hostname:port" combo
+    serve(app, port=bindPort)
+
+
+@app.route('/')
+def hello_world():
+    print("received a request to /")
+    return "Look! It's zrok!"
+
+
+if __name__ == '__main__':
+    root = zrok.environment.root.Load()
+    try:
+        shr = zrok.share.CreateShare(root=root, request=ShareRequest(
+            BackendMode=zrok.model.TCP_TUNNEL_BACKEND_MODE,
+            ShareMode=zrok.model.PUBLIC_SHARE_MODE,
+            Frontends=['public'],
+            Target="http-server"
+        ))
+        shrToken = shr.Token
+        print("Access server at the following endpoints: ", "\n".join(shr.FrontendEndpoints))
+
+        def removeShare():
+            zrok.share.DeleteShare(root=root, shr=shr)
+            print("Deleted share")
+        atexit.register(removeShare)
+    except Exception as e:
+        print("unable to create share", e)
+        sys.exit(1)
+
+    zrok_opts['cfg'] = zrok.decor.Opts(root=root, shrToken=shrToken, bindPort=bindPort)
+
+    runApp()