Made it so when a user posts a photo all the necessary information except for comments is placed in the database in a 'post' entry

[patrickgdbt]

The "Post Photo" button now does more than simply upload the photo so firebase storage, it also creates a "post" database entry that will store:

• The users ID
• The users display name
• The caption
• The posts ID
• The image URL It will also create an entry under the users "user" database entry with the posts unique ID.

Link to user story:

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Link to tasks:

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