feat: expose the default font bytes (#14406)

# Objective

- Enables use cases where third-party crates would want to use the
default font as well [see linebender's
use](https://github.com/linebender/bevy_vello/pull/66)

## Solution

- Uses `include_bytes` macro and make it `pub`

---------

Co-authored-by: Spencer C. Imbleau <spencer@imbleau.com>
Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com>

crates/bevy_text/src/lib.rs

@@ -71,6 +71,10 @@ use bevy_render::{
 };
 use bevy_sprite::SpriteSystem;
 
+/// The raw data for the default font used by `bevy_text`
+#[cfg(feature = "default_font")]
+pub const DEFAULT_FONT_DATA: &[u8] = include_bytes!("FiraMono-subset.ttf");
+
 /// Adds text rendering support to an app.
 ///
 /// When the `bevy_text` feature is enabled with the `bevy` crate, this