Add precommit hooks

[turian]

This is a nice way to keep new pushed code black'ed. (I see you also have a github action for this.)

I see use you --line-length 100 so I added that too.

To get this working, simply run:

pre-commit install

once.

[codecov[bot]]

Codecov Report

Merging #304 (7cdf914) into main (5bd403d) will decrease coverage by 0.07%. The diff coverage is n/a.

Additional details and impacted files

| Flag | Coverage Δ | | *Carryforward flag | |---|---|---|---| | cpu | `81.66% <ø> (ø)` | | | | dali | `40.06% <ø> (ø)` | | Carriedforward from [73eea67](https://codecov.io/gh/vturrisi/solo-learn/commit/73eea67eb60e9f9e1a6ce2dbf4f29badbbbe7d32?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Victor+Turrisi) | *This pull request uses carry forward flags. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Victor+Turrisi) to find out more. | [Impacted Files](https://codecov.io/gh/vturrisi/solo-learn/pull/304?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Victor+Turrisi) | Coverage Δ | | |---|---|---| | [solo/methods/base.py](https://codecov.io/gh/vturrisi/solo-learn/pull/304/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Victor+Turrisi#diff-c29sby9tZXRob2RzL2Jhc2UucHk=) | `78.13% <ø> (-0.85%)` | :arrow_down: |

[turian]

@vturrisi I think this is okay to merge, if you are okay with it. The codecoverage claims to have decreased, but as you can see this is only because of black'ing the file and removing two lines (thus decreasing the "coverage")

[vturrisi]

Hi @turian. I'll be away this weekend, but I'll check as soon as I come back. Thanks for contributing.