chore: import upstream snapshot with attribution

Research/start.py

@@ -0,0 +1,48 @@
+# QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
+# Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# This Python script can be loaded in a notebook (ipynb file)
+# in order to reference QuantConnect assemblies
+#
+# Usage:
+# %run "start.py"
+
+import clr_loader
+import os
+from pythonnet import set_runtime
+
+# The runtimeconfig.json is stored alongside start.py, but start.py may be a
+# symlink and the directory start.py is stored in is not necessarily the
+# current working directory. We therefore construct the absolute path to the
+# start.py file, and find the runtimeconfig.json relative to that.
+set_runtime(clr_loader.get_coreclr(runtime_config=os.path.join(os.path.dirname(os.path.realpath(__file__)), "QuantConnect.Lean.Launcher.runtimeconfig.json")))
+
+from AlgorithmImports import *
+
+# Used by pythonNet
+AddReference("Fasterflect")
+
+Config.Reset()
+Initializer.Start()
+api = Initializer.GetSystemHandlers().Api
+algorithmHandlers = Initializer.GetAlgorithmHandlers(researchMode=True)
+
+# Required to configure pythonpath with additional paths the user may have 
+# set in the config, like a project library.
+PythonInitializer.Initialize(False)
+
+try:
+    get_ipython().run_line_magic('matplotlib', 'inline')
+except NameError:
+    # can happen if start is triggered from python and not Ipython
+    pass