Immediate Mode Line/Gizmo Drawing (#6529)

# Objective
Add a convenient immediate mode drawing API for visual debugging.

Fixes #5619
Alternative to #1625
Partial alternative to #5734

Based off https://github.com/Toqozz/bevy_debug_lines with some changes:
 * Simultaneous support for 2D and 3D.
 * Methods for basic shapes; circles, spheres, rectangles, boxes, etc.
 * 2D methods.
 * Removed durations. Seemed niche, and can be handled by users.

<details>
<summary>Performance</summary>

Stress tested using Bevy's recommended optimization settings for the dev
profile with the
following command.
```bash
cargo run --example many_debug_lines \
    --config "profile.dev.package.\"*\".opt-level=3" \
    --config "profile.dev.opt-level=1"
```
I dipped to 65-70 FPS at 300,000 lines
CPU: 3700x
RAM Speed: 3200 Mhz
GPU: 2070 super - probably not very relevant, mostly cpu/memory bound

</details>

<details>
<summary>Fancy bloom screenshot</summary>


![Screenshot_20230207_155033](https://user-images.githubusercontent.com/29694403/217291980-f1e0500e-7a14-4131-8c96-eaaaf52596ae.png)

</details>

## Changelog
 * Added `GizmoPlugin`
 * Added `Gizmos` system parameter for drawing lines and wireshapes.

### TODO
- [ ] Update changelog
- [x] Update performance numbers
- [x] Add credit to PR description

### Future work
- Cache rendering primitives instead of constructing them out of line
segments each frame.
- Support for drawing solid meshes
- Interactions. (See
[bevy_mod_gizmos](https://github.com/LiamGallagher737/bevy_mod_gizmos))
- Fancier line drawing. (See
[bevy_polyline](https://github.com/ForesightMiningSoftwareCorporation/bevy_polyline))
- Support for `RenderLayers`
- Display gizmos for a certain duration. Currently everything displays
for one frame (ie. immediate mode)
- Changing settings per drawn item like drawing on top or drawing to
different `RenderLayers`

Co-Authored By: @lassade <[email protected]>
Co-Authored By: @The5-1 <[email protected]> 
Co-Authored By: @Toqozz <[email protected]>
Co-Authored By: @nicopap <[email protected]>

---------

Co-authored-by: Robert Swain <[email protected]>
Co-authored-by: IceSentry <[email protected]>
Co-authored-by: Carter Anderson <[email protected]>

Author: 4 people

Cargo.toml

@@ -49,6 +49,7 @@ default = [
   "vorbis",
   "x11",
   "filesystem_watcher",
+  "bevy_gizmos",
   "android_shared_stdcxx",
   "tonemapping_luts",
 ]
@@ -98,6 +99,9 @@ bevy_ui = ["bevy_internal/bevy_ui", "bevy_core_pipeline", "bevy_text", "bevy_spr
 # winit window and input backend
 bevy_winit = ["bevy_internal/bevy_winit"]
 
+# Adds support for rendering gizmos
+bevy_gizmos = ["bevy_internal/bevy_gizmos"]
+
 # Tracing support, saving a file in Chrome Tracing format
 trace_chrome = ["trace", "bevy_internal/trace_chrome"]
 
@@ -309,6 +313,16 @@ description = "Renders a rectangle, circle, and hexagon"
 category = "2D Rendering"
 wasm = true
 
+[[example]]
+name = "2d_gizmos"
+path = "examples/2d/2d_gizmos.rs"
+
+[package.metadata.example.2d_gizmos]
+name = "2D Gizmos"
+description = "A scene showcasing 2D gizmos"
+category = "2D Rendering"
+wasm = true
+
 [[example]]
 name = "sprite"
 path = "examples/2d/sprite.rs"
@@ -400,6 +414,16 @@ description = "A scene showcasing the built-in 3D shapes"
 category = "3D Rendering"
 wasm = true
 
+[[example]]
+name = "3d_gizmos"
+path = "examples/3d/3d_gizmos.rs"
+
+[package.metadata.example.3d_gizmos]
+name = "3D Gizmos"
+description = "A scene showcasing 3D gizmos"
+category = "3D Rendering"
+wasm = true
+
 [[example]]
 name = "atmospheric_fog"
 path = "examples/3d/atmospheric_fog.rs"
@@ -1553,6 +1577,16 @@ description = "Simple benchmark to test per-entity draw overhead. Run with the `
 category = "Stress Tests"
 wasm = true
 
+[[example]]
+name = "many_gizmos"
+path = "examples/stress_tests/many_gizmos.rs"
+
+[package.metadata.example.many_gizmos]
+name = "Many Gizmos"
+description = "Test rendering of many gizmos"
+category = "Stress Tests"
+wasm = true
+
 [[example]]
 name = "many_foxes"
 path = "examples/stress_tests/many_foxes.rs"

crates/bevy_gizmos/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "bevy_gizmos"
+version = "0.11.0-dev"
+edition = "2021"
+description = "Provides gizmos for Bevy Engine"
+homepage = "https://bevyengine.org"
+repository = "https://github.com/bevyengine/bevy"
+license = "MIT OR Apache-2.0"
+keywords = ["bevy"]
+
+[dependencies]
+# Bevy
+bevy_pbr = { path = "../bevy_pbr", version = "0.11.0-dev", optional = true }
+bevy_sprite = { path = "../bevy_sprite", version = "0.11.0-dev", optional = true }
+bevy_app = { path = "../bevy_app", version = "0.11.0-dev" }
+bevy_ecs = { path = "../bevy_ecs", version = "0.11.0-dev" }
+bevy_math = { path = "../bevy_math", version = "0.11.0-dev" }
+bevy_asset = { path = "../bevy_asset", version = "0.11.0-dev" }
+bevy_render = { path = "../bevy_render", version = "0.11.0-dev" }
+bevy_utils = { path = "../bevy_utils", version = "0.11.0-dev" }
+bevy_core = { path = "../bevy_core", version = "0.11.0-dev" }
+bevy_reflect = { path = "../bevy_reflect", version = "0.11.0-dev" }
+bevy_core_pipeline = { path = "../bevy_core_pipeline", version = "0.11.0-dev" }