Set up the first tests for parse-docket-pdf.utils.js

[joeldenning]

We don't want to out someone on their criminal record in a public github repo. So the names and case number and stuff in the test cases should be obfuscated/changed.

[joeldenning]

My suggestion for this is the following:

• Install jest and jest-cli.
• Create a file in the backend/apis/ folder called parse-docket-pdf.utils.test.js
• Create a folder backend/apis/docket-pdf-test-files/
• Copy the text content (not pdf) from the example pdfs we have. Create a file for each one. Make each one a js file that does module.exports = '...'.
• Obfuscate the identifying information in the text. Change out the names, case numbers, etc.
• Have parse-docket-pdf.utils.test.js require() the test files and then run the parser on them.

^ Start out with just one test pdf -- you don't need to get all of them working yet.