Created a new component 'AddGroupButton' that appears in the Navbar and opens a dialogue to create a new friend group.

It is composed of:

• StyledDialogTitle which contains the 'Add a Group' title and the 'X' close button
• StyledUploadImageContainer which is composed of the two circles
  • CircleOutline: displays the image
  • EditImagePopOver: edit icon that opens a popover with a Textfield to input image address.
• Group Name Text Field
• Select Group Members Autocomplete Component where the properties renderTags is the customization of the selected member chips, and renderOption is the customization of the options listed in the dropdown.
• StyledDialogActions which contains the Cancel and Create buttons at the bottom of the dialog.

• Remove the dummy friends database at the bottom of the file
• Once backend is completed, implement creating a group
• Default image