No "Stop taking pictures" function

Although there is a function that does send the **Stop taking pictures** command (`boolean resumeVideo(void)`) it is not a very user friendly way of resetting the picture. Also, the name of the function `boolean takePicture(void)` indicates that a **new** picture is taken, which is only the case for the first picture.

I would suggest that the **Stop taking pictures** command is sent inside the `boolean takePicture(void)` function before a new picture is taken.

The relevant entry points are boolean resumeVideo(void) and boolean takePicture(void); read their current command flow to understand how reset and capture interact. Verify that invoking takePicture() sends the Stop taking pictures command before starting a new picture, and check any existing validation path for the library if one is available.

Written by the indexing model from the issue text.