OpenAI/Swagger documentation for axum's API

[JohnnyGuye]

This PR embarks commits that are also in #23 so don't validate it until the other one is closed

Addition of an autogeneration of OpenAPI specs and a Swagger ui to easily navigate the API through utoipa.

• The Swagger UI is accessible at /swagger-ui
• The root route that returned Hello World! now redirects to /swagger-ui instead
• Routes can be documented by using the #[utoipa::path] macro

Example:

/// Creates a new user
///
/// Creates a new user and returns the user.
#[utoipa::path(
    post,
    path = "/users",
    request_body = CreateUser,
    responses(
        (status = 201, description = "The user created", body = User)
    )
)]
async fn create_user(Json(payload): Json<CreateUser>) -> impl IntoResponse {
    // ... app logic
    (StatusCode::CREATED, Json(user))
}

Generates this swagger


And the Swagger UI is interactive

[Lauwed]

• Lock the node version engine in package.json to v20
• Create a new file .nvmrc and the content should be 20 (TOUT COURT, si vous avez la ref)

[lilymonad]

Some suggestions added

[lilymonad]

Suggested change

	#[derive(Deserialize)]
	#[derive(ToSchema)]
	#[derive(Deserialize, ToSchema)]

[lilymonad]

Suggested change

	#[derive(Serialize)]
	#[derive(ToSchema)]
	#[derive(Serialize, ToSchema)]

[lilymonad]

is it the good formating or an artefact from your code editor ?
(same with web/.nvmrc but for some reason i cannot add a comment there)