Adding new problems

[asadsid95]

Re: #17

Description: Able to create new problems and append to problem list

Details:

• Only for admin users
• Create a form that requires all info for problem
• Submit this form and create new object that contains all the info.
• Append the new problem to the problem list

[asadsid95]

To do:

• [x] Create a form that requires all info for problem
• [x] Submit this form, and create new collection and documents in Firebase that contains all the info.
• [ ] Enabled to admin users only
• [ ] Append the new problem to the problem list