Updated Folder Structure of the 'slice-codec' Crate to be More Modular

[InsertCreativityHere]

This PR makes no changes to the code, logic, or tests, it only moves code between files.

The current structure of the slice-codec is not great. There is a single folder (named buffer) which holds both the InputSource and OutputTarget traits in a single file, along with the implementations (also mixed). Everything else is dumped directly in the top-level src folder.

This PR changes the structure so these are all the top-level items:

• decoding: Contains the actual Decoder, and the DecodeFrom implementations for all the types we support
• encoding: Contains the actual Encoder, and the EncodeInto implementations for all the types we support
• input_source: low-level API for reading bytes from (possibly chunked) byte sources (knows nothing about Slice)
• output_target: low-level API for writing bytes to (possibly chunked) byte targets (knows nothing about Slice)
• error.rs: The error type definitions, which are shared by all the crate's fallible functions.
• lib.rs: The root of the crate, where we pull in the other modules and declare some publicly useful constants.

I think this is a much cleaner structure, and better emphasizes the complete separation between the encoding/decoding halves of the code. Instead of the old design where encoding/decoding logic was mixed together in the same modules.

[Copilot]

Pull request overview

This pull request restructures the slice-codec crate into more modular, responsibility-focused modules by separating encoding/decoding from low-level byte IO, and updating downstream imports to match the new public module layout.

Changes:

• Split the previous buffer module into dedicated input_source and output_target modules and update call sites/imports accordingly.
• Move encoding/decoding APIs under encoding/* and decoding/*, and re-export them from the crate root.
• Add/relocate slice- and vec-based source/target implementations into the new module structure.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
slicec/src/definition_types.rs	Updates imports to the new input_source / output_target module paths.
slice-codec/tests/encoding_tests.rs	Updates test imports/usages to match the new module layout.
slice-codec/src/lib.rs	Exposes input_source / output_target, reorganizes module structure, and re-exports encoding/decoding items.
slice-codec/src/input_source/mod.rs	Introduces the input_source module and InputSource trait location.
slice-codec/src/input_source/slice_input_source.rs	Provides the slice-based InputSource implementation under the new module structure.
slice-codec/src/output_target/mod.rs	Introduces the output_target module and re-exports output target implementations.
slice-codec/src/output_target/slice_output_target.rs	Adds the slice-based OutputTarget implementation as its own module/file.
slice-codec/src/output_target/vec_output_target.rs	Keeps the vec-based OutputTarget implementation under output_target and updates internal paths.
slice-codec/src/encoding/mod.rs	Creates the encoding module layout (encoder + encode_into + impls).
slice-codec/src/encoding/encode_into.rs	Adjusts imports to the new encoding/* + output_target structure.
slice-codec/src/encoding/encoder.rs	Adjusts imports to the new encoding/* + output_target structure.
slice-codec/src/encoding/encoding.rs	Adjusts imports to the new encoding/* + output_target structure for implementations.
slice-codec/src/decoding/mod.rs	Creates the decoding module layout (decoder + decode_from + impls).
slice-codec/src/decoding/decode_from.rs	Adjusts imports to the new decoding/* + input_source structure.
slice-codec/src/decoding/decoder.rs	Adjusts imports to the new decoding/* + input_source structure.
slice-codec/src/decoding/decoding.rs	Adjusts imports to the new decoding/* + input_source structure for implementations.
slice-codec/src/buffer/slice.rs	Removes the old combined slice input/output implementation file (content relocated).

Comments suppressed due to low confidence (1)

slice-codec/src/output_target/mod.rs:3

• Module-level docs are currently a TODO placeholder. Since this module is part of the public API now, the docs should describe what an OutputTarget is and how it relates to encoding.

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