Move lcf::Data out of parser implementations

[fmatthew5876]

Preparation for removing globals from liblcf. This change only moves lcf::Data out to the edges. Player and Editor are not affected by this.

Next PR will remove lcf::Data

TBD:

• Test reading/writing 2k and 2k3 LDB, LMT, LMU, LSD files to ensure no breaks

[fmatthew5876]

I tested this on some lcf files, the outputs match exactly. This is ready.

[Ghabry]

did you use this 1500 LDB files collection from rmarchiv?

I wanted to run a test with them but somehow can't find the script anymore.
I slowly consider setting up a test on jenkins that does this for me...

[fmatthew5876]

I have about 40 games 2k and 2k3 on my hard drive right now.
I just made bench_readldb save the ldb back to disk and ran this:

for x in 2k3/*/*.ldb; do ./bench_readldb "$x"; md5sum "$x" out.ldb; done

All compared exactly.

[Ghabry]

2269 LDB, 2269 LMT, 4229 LMU and 722 LSD later: The hashes match. (also the mismatches match, more on this later)