Backtest manager - Create page does not have `Market Making` strategies in the dropdown

[david-hummingbot]

Describe the bug

The Create page only has the drop down for Directional Strategies and does not have Market Making strategies under Template Name. If you are trying to edit one of the Market Making strategies (dman_v1, dman_v2, dman_v3) and save it, it will save the file under directional strategies instead.

Steps to reproduce bug

1. Go to the Create screen
2. Try the drop down and see there is only Directional Strategies listed under Template Name
3. Click on one of the dman strategies under Market Making and click the pencil icon to edit.
4. Give the strategy a name under Strategy Name and click Create - file will be saved under Directional Strategies.
5. Edit the file you just created and the code will be for a directional strategy instead of market making.

[david-hummingbot]