Tweet route endpoints and tests

[jamesgeer]

Routes added:

• GET /api/tweets/:id
• PATCH /api/tweets/:id
• DELETE /api/tweets/:id

Methods added:

• Get single tweet
• Update tweet's content and/or scheduled time
• Delete tweet
• handleServerError to reduce amount of code for error status and messages.

Updated:

• insert tweet now returns created tweet instead of a boolean.
• Tweet type now includes account id, created and update dates.

Tests:

• Create, read, update and delete single tweet.

Other:

• Set Jest's maxWorkers to 1 to fix Jest's unable to parse big ints error.
• Set keyword-spacing eslint rule to off to fix a conflict between prettier and eslint.
• Moved app listen to server.ts to fix error where Jest would not close after running tests, this means that the start file for the backend is now "server.ts" instead of "app.ts".
• Format command didn't actually work so added backend but doesn't seem to do anything.

Problems:

• Need tests for trying to delete a tweet that doesn't exist, however, Prisma's error handling is confusing and seems to only return undefined, requires more in-depth investigation.
• Need to create a test harness class to reduce code duplication between tests.
• Wanted to test get all tweets but this relies on session variable, could not find an easy way to mock this, perhaps I shouldn't use a session variable? 🤔

[EdwardChristian]

Have you created Issues for the "problems" that are not solved in this PR? Can you do that so we keep track?

[jamesgeer]

Have you created Issues for the "problems" that are not solved in this PR? Can you do that so we keep track?

Yes I have now created #80 #81 #82 :)