Change `anyhow` to `color_eyre` in all tutorials

[kdheepak]

Currently the tutorials start off using anyhow and switch to using color_eyre, something I did in all my projects while I was writing some of the tutorial material. If I were to write them from scratch, I'd start off using color_eyre to begin with.

[KekmaTime]

@kdheepak i would like to work on this issue can you assign me this

[kdheepak]

Awesome! Thanks for offering to work on this! Let us know if you have any questions!

[joshka]

See https://github.com/ratatui-org/website/pull/229 for some details on this. Also, I'm gradually rewriting the existing counter app tutorials in https://github.com/ratatui-org/website/pull/209, which covers color_eyre in the second part, so those will all end up having color_eyre installed as the next one builds on top of it etc.

Hello world shouldn't have color_eyre as it should be as simple as possible. So that really leaves the JSON tutorial

[KekmaTime]

@kdheepak https://github.com/ratatui-org/website/pull/240

[mccartney]

Is there anything to be done after #240 is merged?

[kdheepak]

There's still a number of places anyhow is mentioned or used.

$ rg anyhow
code/the-elm-architecture/src/main.rs
4:// cargo add anyhow crossterm ratatui

src/content/docs/how-to/develop-apps/config-directories.md
44:use anyhow::{anyhow, Context, Result};
53:return Err(anyhow!("Unable to find data directory for ratatui-template"));
64:return Err(anyhow!("Unable to find config directory for ratatui-template"));

src/content/docs/tutorials/counter-app/multiple-functions.md
39:If you use the popular [`anyhow`](https://docs.rs/anyhow/latest/anyhow/) then instead of these two
47:you can simply import `Result` from `anyhow`:
50:use anyhow::Result;
53:You will need to run `cargo add anyhow` for this to work.
222:use anyhow::Result;

src/content/docs/tutorials/counter-async-app/sync-increment-decrement.md
82:use anyhow::Result;

src/content/docs/tutorials/counter-async-app/async-increment-decrement.md
12:use anyhow::Result;

src/content/docs/concepts/application-patterns/component-architecture.md
40:use anyhow::Result;

src/content/docs/tutorials/counter-app/index.md
24:cargo add ratatui crossterm anyhow
29:We opt to use the `anyhow` crate for easier error handling; it is not necessary to build apps with

src/content/docs/tutorials/counter-app/multiple-files/index.md
33:We are going to use `anyhow` in this section of the tutorial.
36:cargo add anyhow
41:Instead of `anyhow` you can also use [`eyre`](https://github.com/eyre-rs/eyre) or
45:- use anyhow::Result;
49:You'll need to add `color-eyre` and remove `anyhow`:
52:cargo remove anyhow

src/content/docs/templates/component/tui-rs.md
55:use color_eyre::eyre::{anyhow, Context, Result};

But I believe this PR will address most of it: https://github.com/ratatui-org/website/pull/209/

Anything not addressed by that PR, i.e. anything not in the counter tutorial, will have to be addressed separately.

[KekmaTime]

There's still a number of places anyhow is mentioned or used.

$ rg anyhow
code/the-elm-architecture/src/main.rs
4:// cargo add anyhow crossterm ratatui

src/content/docs/how-to/develop-apps/config-directories.md
44:use anyhow::{anyhow, Context, Result};
53:return Err(anyhow!("Unable to find data directory for ratatui-template"));
64:return Err(anyhow!("Unable to find config directory for ratatui-template"));

src/content/docs/tutorials/counter-app/multiple-functions.md
39:If you use the popular [`anyhow`](https://docs.rs/anyhow/latest/anyhow/) then instead of these two
47:you can simply import `Result` from `anyhow`:
50:use anyhow::Result;
53:You will need to run `cargo add anyhow` for this to work.
222:use anyhow::Result;

src/content/docs/tutorials/counter-async-app/sync-increment-decrement.md
82:use anyhow::Result;

src/content/docs/tutorials/counter-async-app/async-increment-decrement.md
12:use anyhow::Result;

src/content/docs/concepts/application-patterns/component-architecture.md
40:use anyhow::Result;

src/content/docs/tutorials/counter-app/index.md
24:cargo add ratatui crossterm anyhow
29:We opt to use the `anyhow` crate for easier error handling; it is not necessary to build apps with

src/content/docs/tutorials/counter-app/multiple-files/index.md
33:We are going to use `anyhow` in this section of the tutorial.
36:cargo add anyhow
41:Instead of `anyhow` you can also use [`eyre`](https://github.com/eyre-rs/eyre) or
45:- use anyhow::Result;
49:You'll need to add `color-eyre` and remove `anyhow`:
52:cargo remove anyhow

src/content/docs/templates/component/tui-rs.md
55:use color_eyre::eyre::{anyhow, Context, Result};

But I believe this PR will address most of it: #209

Anything not addressed by that PR, i.e. anything not in the counter tutorial, will have to be addressed separately. @kdheepak can i work on this again?

[KekmaTime]

@kdheepak i've made a few changes but i might need your help in this

[joshka]

@kdheepak i've made a few changes but i might need your help in this

Feel free to post a WIP PR.

Edit: just saw https://github.com/ratatui-org/ratatui-website/pull/546