Add pre-commit typos & codespell hooks

[xavier2k6]

Testing for typo's etc.

example:

verisoning -> versioning

libtorrent/Jamfile

Line 190 in 2ab8fed

# when the verisoning scheme changed from year to (low) version numbers.

[arvidn]

there are a lot of good fixes here. if only it could be made to ignore string literals. ignoring the .torrent files is easy enough

[xavier2k6]

certain words etc. can be excluded.....will be back to it...any suggestions on what you'd like to exclude or want to actually change?

leafs -> leaves
file_prioritity0 -> file_priority0
file_prioritity1 -> file_priority1

[arvidn]

the most obvious false positives were in string literals in the c++ code, in the utf-8 test file and in .torrent files. Maybe also in some .xml files.