Added the basement area of Tutorial 2 (Learning the Ropes) for the lore.

So I found the ladder/dungeon in a house to be unconnected. Turns out, it was for Tutorial 2 (Learning the Ropes). Wanted to implement the area only.

What has been done in this MR?

• Implemented only the basement in lumbridge and Sir Vant.

What should testers check?

• Basement can be accessed.
• Sir Vant can be talked to.
• https://www.youtube.com/watch?v=Kc-XXhhYtVM
• https://www.youtube.com/watch?v=NvVVTkRZ2q0

• I have tested these changes thoroughly.

• I used the relevant Thanos/Zaros tool for any JSON edits where possible, and have attached screenshots of any changes.