Test Fix and CI

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Task List:

• [x] Test now runs (NPM Package was outdated to be used along with node 14).
• [x] Prettier Added.
• [x] Eslint config updated.
• [x] Coveralls Added.
• [x] Travis Introduced.
• [x] Prettier run on the current codebase.

No logic changes introduced in this.

Update: Logic changes introduced in #22 which was merged with it recently.

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Around 85 tests fail without introducing any logical changes out of 10868 tests.

List of tests which is failing: https://docs.google.com/document/d/1IcaqhPlAaYnnPViHPA7Y3FSjRlftZph8rCzUdv7RDPY/

It takes 4+ hours to run the test, so made it to a doc for easier access to which files need help.

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Part of it was approved by @eMarchenko here: https://github.com/DistributedCollective/oracle-based-amm/pull/22