#34 Sentiment Analysis Backend

[BasicallyOk]

What does this PR do?

Providing the solution to #34 mainly. The experiences will be evaluated and changed over time as more submissions are added. Allowing users to find out how many people shares similar experiences as them. Also allow researchers a way to identify trends.

The ticket will also include a script to seed the database with Erowid submissions. This is clutch for testing analytics and researcher-centric functionalities.

Github Issue Number

Resolves: #34 #68 #71 #72 (turns out I can get it done pretty quick)

Relates to: ~Potentially #72, but that ticket will probably warrant its own PR due to the size of the rework involved.~

69 (nice, but I forgot about it, not nice, next pr it is)

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