Add launch window to launches

Add a launch_window tag, holding the launch window in seconds. For example, the GPS III SV01’s launch window is 26 minutes. This information can be located in its reddit thread.

• For instantaneous launches, like CRS missions, a 0 would be ideal.
• If the launch window is unknown, null would be the best option.

Here is an example of how could it look like:

{
  "flight_number": 73,
  "mission_name": "GPS III SV01",
  "launch_window": 1560,
  ...
}

Thanks!

[jakewmeyer]

Launch windows have been added 👍

[jakewmeyer]

Sounds good, it’s in the pipeline 👍