add some lotr configs to the defaults

[mist475]

Ive been using these changes locally for years but its been some time since I tested them fully.
The lotr leaves might need an exclusion for the falling leaves as lotr adds it's own particle for at least one iirc but I haven´t tried that yet. I'll add a follow up pr in case it's needed.

[Kynake]

Tested this out locally, LOTR adds many trees, most are fine, but seems that a few specific trees have their own custom leaf VFX, and could be excluded later:

• Mallorn
• Green-oak
• Red-oak
• Mirk-oak

Bush leaves don't have the falling leaf VFX (which is how it should be)

[Kynake]

Tested this out locally, LOTR adds many trees, most are fine, but seems that a few specific trees have their own custom leaf VFX, and could be excluded later:

* Mallorn
* Green-oak
* Red-oak
* Mirk-oak

Fixed as of aac4ecd (These leaf blocks won't render BF's falling leaf VFX even when it's enabled)