Fixes/enchancements for vtt2ass with new Hidive Q styles

[IONI0]

Addresses https://github.com/anidl/multi-downloader-nx/issues/608.

• That is, properly reverse simultaneous lines. As a side effect, all lines with a \pos tag will be put at the bottom of the script which lines up better with the behavior before the new Q styles. The implementation in V4.6.0 has some issues with lines being ordered weirdly and newlines being assigned to the wrong events.

---

Additional enhancements:

• Lines with the same data that are adjacent become joined into one event

  Dialogue: 0,0:06:10.92,0:06:11.71,Q0,,0,0,0,,I'm telling you though, there really is-
  Dialogue: 0,0:06:11.71,0:06:13.08,Q0,,0,0,0,,I'm telling you though, there really is-
  Dialogue: 0,0:06:11.71,0:06:13.08,Q2,,0,0,0,,I told her we'd talk, but...
  Dialogue: 0,0:06:13.08,0:06:14.42,Q2,,0,0,0,,I told her we'd talk, but...

  Becomes

  Dialogue: 0,0:06:10.92,0:06:13.08,Q0,,0,0,0,,I'm telling you though, there really is-
  Dialogue: 0,0:06:11.71,0:06:14.42,Q2,,0,0,0,,I told her we'd talk, but...

  This does mean that it will look different from what it looks like on Hidive but it should be more readable. For example in an event like what was shown above:

  Line 1 -> nothing
  Line 2 -> line 1
  Line 3 -> line 2

  Becomes

  Line 1 -> Line 1
  Line 2 -> Line 2
  Line 3 -> Empty space

This is done in line 367 if you want to link it up to an option or turn it off.

---

• Lines without a \pos tag get layer 1 so that they can display over potential captions if needed. Otherwise the previous behavior was that captions would obscure the dialogue.

This is done in line 273, you can change it to Dialogue: 0,${line.start},${line.end},${line.style},,0,0,0,,${line.text});` to make it remain on layer 0.

[AnimeDL]

Could you please fix the eslint errors? I highly recommend setting up your dev environment for eslint if you haven't already

[IONI0]

I've fixed the Eslint errors a logic error with aligning start time of subs, and added a cli option for combineLines which is false by default. Let me know if anything else is wrong

[AnimeDL]

LGTM, merging