Remove need for scheduler to format expected output

[tijlleenders]

Is your feature request related to a problem? Please describe. Right now, we're using the formatter of the scheduler to make the expected.json format match the formatter we use from serde on the observed.json.
This is a problem for two reasons:

• improper formatting on the expected.json will never be fixed in the file, only compensated at runtime. So this means a file<==>file compare from the IDE will be suboptimal, showing formatting diffs.
• it forces us to implement Deserialize on Task - which is counter intuitive and confusing, as Task is never and input to the scheduler - but purely an output.

Describe the solution you'd like Find the formatting command outside of the scheduler that will match the serde formatter we use
or
Find a serde formatter that matches the formatter we use from the IDE (preferred)

Describe alternatives you've considered Leave it be... It will cost a lot of extra time and confusion. Let's just do it proper.

Additional context None.

[tijlleenders]

At the bottom of the VSCode editor on the right hand click "Spaces: #":

Then a menu will appear up top. Select "Indent Using Spaces":

Finally you can select by how many spaces you want your files to be indented (we use 2).

The next time you format an expected.json file you should be able to get the spacing you configured.