Add the option to upload images and videos under “Add post”

[maurices3001]

The image or video should be displayed on the left side of the post and take up about half of the post. For now, the image/video does not need to be resizable. The video should be playable within the post. In the future, it would be great to have a feature where clicking on the image/video opens it in a popup for a larger view.

[naadnn]

Frontend issue #129

To-Do:

• Backend
• discuss about using a cloud service to store images/videos

Currently there is an option to upload one image or video and a preview for both was added.