Testing (enabledRegExps=true)

With this feature enabled I tested all of the following with this wordlist, it all worked fine:

      words:
        - (https?:\/\/)?t\.me\/(\+)?[a-zA-Z0-9_-]+
        - cashapp
        - "apple pay"
        - "paypal"

1. a regular word, lower cases

cashapp

2. a regular word, capital letters

CASHAPP

3. a t.me link with https

https://t.me/+32cFzLuOiacxZmMe

4. a t.me link without https

t.me/+32cFzLuOiacxZmMe

5. with surrounding text:

Visit t.me/channel for more info! (t.me/channel)

Testing (enabledRegExps=false)

Now to test it with this new feature disabled and the same wordlist, to ensure that all the previous functionality still works.

1. a regular word, lower cases

cashapp

2. a regular word, capital letters

CASHAPP

3. a t.me link with https (it's not triggered here):

https://t.me/+32cFzLuOiacxZmMe

It's been stated that:

i think at one point mjolnir fixed a bug where an empty word in the list would match every single message, and that was when the original regex support stopped working
so i’m a little curious, what happens if you use an empty string with your implementation :p

Just tested this out and nope, it seems fine. With this word list:

matrix_bot_mjolnir_configuration_extension_yaml: |
  # Configuration specific to certain toggle-able protections
  protections:
    wordlist:
      enableRegExps: true
      words:
        - (https?:\/\/)?t\.me\/(\+)?[a-zA-Z0-9_-]+
        - ""
        - 
      minutesBeforeTrusting: 10080

The entry that's - "" doesn't seem to impact functionality at all.

While the truly blank entry at the end (when added after) seems to stop the WordList feature from working entirely. (Which is a separate issue this PR isn't meant to address really)

This is a fix for #547