Relative text speed

Hey everyone!

With helpful feedback from Feniks and brunoais, I added another set of improvements to the speech pauses plugin:

• I switched from {w} tags to {cps} tags, which means a whole line can be shown at once with just one click, no matter how many pauses it may have!
• The pauses stay relative to your text speed. If you have slow text, the pauses will be longer, and if you have fast text, the pauses will be shorter.
• The pauses won't activate at all if the text is set to display instantly.
• Added a hacky workaround for "nospace-pauses" that have a repeating character, e.g. "……" or "——".
• The plugin now accounts for all built-in Ren'Py text tags by default.
• Especially big thanks to brunoais for this one: There is now a built-in workaround if you have more than one plugin that makes use of [config.say_menu_text_filter].

As always, let me know if you run into any issues, and thank you for your support!