Added endpoints for /degrees and /courses in plannify.js

[c-sfeng]

Added draft routes for /degrees and /courses

[bofeiw]

One thing worth mentioning on line 9 is that the regex of course code should catch all the courses.
For example ACCT1511 would not be caught if specifying A-S because 'T' > 'S'.
To catch all course codes, A-Z would be better.

#18 (comment)

[c-sfeng]

Evidence of testing:

courses POST
request:
"majorName": "Software Engin",
"minorName": ""
response:
courses POST res.txt

The response is missing COMP4951, COMP4952, COMP4953, as they are new courses that can't be found on the legacy handbook

degrees GET
request:
no params
response:
degrees GET res.txt

[jjccharles]

LGTM, can do fix pr if issues exist that have not been addressesd

Changes have been resolved