Setup dune project

.gitignore

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+# IDE folders
+.idea/
+.vscode/
+.fleet/
+
+# Build folder
+_build/
+
+# Mac OS
+.DS_Store

README.md

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+<h1 align="center">Welcome to Croissant 👋</h1>
+<p>
+  <img alt="Version" src="https://img.shields.io/badge/version-0.0.1-blue.svg?cacheSeconds=2592000" />
+  <a href="./LICENCE" target="_blank">
+    <img alt="License: MIT" src="https://img.shields.io/badge/License-MIT-yellow.svg" />
+  </a>
+</p>
+
+> Custom programming language in french
+
+## Install
+
+This project uses [Dune](https://dune.build/) as a build system. You can install it with the following command:
+
+```sh
+opam install dune
+```
+
+## Usage
+
+Run the following commands to build and run the project:
+
+```sh
+dune build
+dune exec croissant
+```
+
+## Run tests
+
+```sh
+dune test
+```
+
+## Author(s) 👤
+
+- **[@LucasVbr](https://github.com/LucasVbr)**
+
+## Show your support
+
+Give a ⭐️ if this project helped you!
+
+## 📝 License
+
+Copyright © 2024 [LucasVbr](https://github.com/LucasVbr).<br />
+This project is [MIT](LICENCE) licensed.

bin/dune

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+(executable
+ (public_name croissant)
+ (name main)
+ (libraries croissant))

bin/main.ml

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+let () = print_endline "Hello, World!"

dune-project

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+(lang dune 3.10)
+
+(name croissant)
+
+(generate_opam_files true)
+
+(source
+ (github username/reponame))
+
+(authors "Author Name")
+
+(maintainers "Maintainer Name")
+
+(license LICENSE)
+
+(documentation https://url/to/documentation)
+
+(package
+ (name croissant)
+ (synopsis "A short synopsis")
+ (description "A longer description")
+ (depends ocaml dune)
+ (tags
+  (topics "to describe" your project)))
+
+; See the complete stanza docs at https://dune.readthedocs.io/en/stable/dune-files.html#dune-project

lib/dune

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+(library
+ (name croissant))

test/dune

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+(test
+ (name croissant))