chore: experiment with swift-format for PR

[FL33TW00D]

swift-format seems quite heavy handed.

[DePasqualeOrg]

@FL33TW00D, maybe try a line length of 120, which might result in fewer changes and looks better to my eye. If it's making too many changes that are not to your taste, it might be because it's applying default settings that you can override by specifying rules.

[FL33TW00D]

@DePasqualeOrg if you have any suggestions on config to try and minimize changes that would be great! The main one for me is how to disable adding public everywhere, Apple that is not a formatter.

[DePasqualeOrg]

It looks like the public additions are happening on extensions, and I don't see an option to avoid that in the docs. I guess it's for clarity on things that are already public.

I don't care too much about specific rules, as long as they don't make the code harder to read. I find the 100-character line length makes the code less readable, and I have my configuration files set to 120 for that reason.

[FL33TW00D]

@DePasqualeOrg Updated to 120 line length.

This can be tested locally with act pull_request -W .github/workflows/format.yml -P macos-latest=-self-hosted. Unfortunately it will still require large changes

| ❌ The following files need formatting:
| ./Tests/TensorUtilsTests/WeightsTests.swift
| ./Tests/TensorUtilsTests/LogitsWarperTests.swift
| ./Tests/TensorUtilsTests/TestUtils.swift
| ./Tests/TensorUtilsTests/TensorUtilsTests.swift
| ./Tests/HubTests/HubApiTests.swift
| ./Tests/HubTests/HubTests.swift
| ./Tests/PreTokenizerTests/PreTokenizerTests.swift
| ./Tests/PostProcessorTests/PostProcessorTests.swift
| ./Tests/NormalizerTests/NormalizerTests.swift
| ./Tests/TokenizersTests/TrieTests.swift
| ./Tests/TokenizersTests/DecoderTests.swift
| ./Tests/TokenizersTests/ChatTemplateTests.swift
| ./Tests/TokenizersTests/BertTokenizerTests.swift
| ./Tests/TokenizersTests/FactoryTests.swift
| ./Tests/TokenizersTests/TokenizerTests.swift
| ./Tests/TokenizersTests/SquadDataset.swift
| ./Tests/TokenizersTests/AddedTokensTests.swift
| ./Tests/TokenizersTests/SplitTests.swift
| ./Package.swift
| ./Sources/Tokenizers/Decoder.swift
| ./Sources/Tokenizers/UnigramTokenizer.swift
| ./Sources/Tokenizers/ByteEncoder.swift
| ./Sources/Tokenizers/Tokenizer.swift
| ./Sources/Tokenizers/PostProcessor.swift
| ./Sources/Tokenizers/BertTokenizer.swift
| ./Sources/Tokenizers/BPETokenizer.swift
| ./Sources/Tokenizers/Trie.swift
| ./Sources/Tokenizers/TokenLattice.swift
| ./Sources/Tokenizers/Normalizer.swift
| ./Sources/Tokenizers/Utils.swift
| ./Sources/Tokenizers/PreTokenizer.swift
| ./Sources/TransformersCLI/main.swift
| ./Sources/HubCLI/HubCLI.swift
| ./Sources/Models/LanguageModel.swift
| ./Sources/Models/LanguageModelTypes.swift
| ./Sources/Hub/Downloader.swift
| ./Sources/Hub/HubApi.swift
| ./Sources/Hub/Hub.swift
| ./Sources/Generation/GenerationConfig.swift
| ./Sources/Generation/Generation.swift
| ./Sources/TensorUtils/MLShapedArray+Utils.swift
| ./Sources/TensorUtils/Math.swift
| ./Sources/TensorUtils/LogitsWarper/TemperatureLogitsWarper.swift
| ./Sources/TensorUtils/LogitsWarper/LogitsWarper.swift
| ./Sources/TensorUtils/LogitsWarper/LogitsProcessor.swift
| ./Sources/TensorUtils/LogitsWarper/TopPLogitsWarper.swift
| ./Sources/TensorUtils/LogitsWarper/RepetitionPenaltyWarper.swift
| ./Sources/TensorUtils/LogitsWarper/TopKLogitsWarper.swift
| ./Sources/TensorUtils/MLMultiArray+Utils.swift
| ./Sources/TensorUtils/Weights.swift

[DePasqualeOrg]

Of course the best time to start using formatting would have been at the beginning of the project, to avoid having changes later on. But I think the benefits of having automated formatting outweigh any drawbacks (that I'm aware of) of this one-time change.

[FL33TW00D]

After discussions with @ZachNagengast, it seems that nicklockwoods swiftformat is probably a better choice than Apples swift-format.
I've updated the action accordingly.

I'd be happy to format the whole repo using this, but will defer to @pcuenca for confirmation.

Thanks @ZachNagengast!