Improve DynamicSecurityData usability

Adds IRegisteredSecurityDataTypesProvider to track all the data types
registered in the algorithm. Using this data, we can detect if it's
possible that we'll eventually have a property of a certain type name.
For example, consider I wish to use security.Data.TradeBar but we haven't
received any trade bars yet. Before this change a KeyNotFoundException
would be raised, but since we can determine that we expect to have trade
bars, we can detect this and return an empty list when we haven't received
any data yet. This also removes the need to constantly do a HasData<T>()
check before accessing the dynamic members.

Closes #3620

Algorithm.Python/QuantConnect.Algorithm.Python.csproj

@@ -68,6 +68,7 @@
     <None Include="CustomDataAddDataRegressionAlgorithm.py" />
     <Content Include="CustomDataAddDataOnSecuritiesChangedRegressionAlgorithm.py" />
     <Content Include="CustomDataAddDataCoarseSelectionRegressionAlgorithm.py" />
+    <Content Include="DynamicSecurityDataAlgorithm.py" />
     <Content Include="KerasNeuralNetworkAlgorithm.py" />
     <None Include="PsychSignalSentimentRegressionAlgorithm.py" />
     <Content Include="CustomDataUsingMapFileRegressionAlgorithm.py" />