Post creation - choose tag

**AS** a user,
**Given** that I am on the "Create the post" page
**When** I tap on the "Add a tag"
**Then** a pop up appears with a list of tabs (refer to the design to see all the tags)
**When** I select a number of tags
**Then** the Add tags buttons show the number of tags I have selected
**When** I have selected at least 1 tag and tapped on the "Add x tags" button
**Then** I am back on the main page and the "Add tag" is minimized to a + sign

**Design**

**Acceptance criteria**
The number of tags must appear in the confirmation button
The user can select / deselect tags
If at least 1 tag is selected, the add tag on the main page is minimized to a + sign