Add ability to escape backticks

[GhostInThePotato]

Is your feature request related to a problem? Please describe. Currently unable to escape backticks, which means I can't demonstrate to someone how to do multi-line code.

Describe the solution you'd like Be able to escape backticks so that RocketChat doesn't try to format the backticks into code blocks.

Describe alternatives you've considered The current best way I've found so far is with the following code:

But this only sort of looks correct:

[abruening-iwt]

I just ran into the same problem

[99991]

You can indent your code block with four spaces, which will preserve the backticks. Note that RocketChat eats leading whitespace at the beginning of the message, so you have to write some random text first, e.g. the word "Example":

Example:

    ```
    some code here
    ```