Add inline image tag

[JackMorganNZ]

An author should be able to add an image as inline, skipping the block check required by normal image tags.

Example usage:

| Input | Output                                                                                      |
| ----- | ------------------------------------------------------------------------------------------- |
| 31    | {image-inline file-path="img/topics/programming-exercises/binary-challenge-9-example1.png"} |
| 11    | {image-inline file-path="img/topics/programming-exercises/binary-challenge-9-example2.png"} |

All parameters for normal image tags should also be available, except for the alignment parameter.