Implement the Mentorship session lifecycle

[jajodiaraghav]

Once we have the User Dashboard ready, all we need is to implement the following lifecycle:

STEP 0: In the idle state or non-active state, a mentorship session is said to be "off".
STEP 1: When a user wants to request for a mentor, they can click on the "request for mentor" button. This will send a mentor request to WooTech servers, where based on the algorithm the mentor will be allocated. During this processing, based on the availability of mentors, it may take some time, hence it will be in "Awaiting mentor allocation" state.
STEP 2: Once a mentor is allocated, it will be in "Awaiting mentor acceptance" state, until the mentor accepts. If a mentor does not accept or does not respond within 2 days, return to Step 1. If the mentor accepts, go to STEP 3.
Step 3: Status is changed to "In-session" and the following items are displayed:
The contact information of mentors and mentees to each other
Extend the session button
End Session button
The span os STEP 3 is 1 week long by default after which the session will end (STEP 4). If "Extend session" is clicked, it can be kept being extended infinitely. Session may also be ended prematurely by clicking "END-SESSION"
STEP 4: Once the session ends, feedback is requested for mentor and mentee. Until it is filled the mentorship session cannot go back to "Off" state i.e. STEP 0 to enable to request another mentorship session by user.