Polish workflow and make it reproducible using toy data

[maurolepore]

Relates to #1

This PR:

• Makes the workflow reproducible by using toy data, and writing outputs under ~/Downloads.
• Makes names consistent with existing names in profile_*() arguments or tiltToyData.
• Makes the text easier to maintain by removing brittle references to names/numbers that will likely change. For example, saying this works with "all the four indicators" is brittle. It will become obsolete when we add a fifth indicator. Also references to tiltIndicatorBefore are brittle, as that's a poor name (my bad idea) and is likely to change.
• Shows results so the user can see what the output looks like without needing to run this workflow.

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TODO

• Link related issue/PR.
• Describe the goal of the PR. Avoid details that are clear in the diff.
• Mark the PR as draft.
• Include a unit test.
• Review your own PR in "Files changed".
• Ensure the PR branch is updated.
• Ensure the checks pass.
• Change the status from draft to ready.
• Polish the PR title and description.
• Assign a reviewer.

EXCEPTIONS

• Slide here any item that you intentionally choose to not do.