feat(bar): add widget grouping options

This commit adds various widget grouping and transparency options to
komorebi-bar, and is comprised of the individual commits listed below,
worked on in PR #1108, squashed into one.

e8f5952abb
* adding RenderConfig, and some test frames on widgets

0a5e0a4c0a
* no clone

a5a7d6906c
* comment

6a91dd46cd
* ignore unused

80f0214e47
* Group enum, Copy RenderConfig

fbe5e2c1f7
* Group -> Grouping

ce49b433f9
* GroupingConfig

f446a6a45f
* "fmt --check" fix (thanks VS)

d188222be7
* added widget grouping and group module

1008ec2031
* rounding from settings, and apply_on_side

7fff6d29a9
* dereferencing

655e8ce4c1
* AlphaColour, transparency, bar background, more grouping config options

cba0fcd882
* added RoundingConfig

ec5f7dc82d
* handling grouping edge case for komorebi focus window

12117b832b
* changed default values

645c46beb8
* background color using theme color, AlphaColour.to_color32_or, updating json format for Grouping and RoundingConfig

10d2ab21c7
* hot-reload on grouping

d88774328a
* grouping correction on init

2cd237fd0d
* added shadow to grouping, optional width on grouping stroke

4f4b617f26
* grouping on bar, converting AlphaColour from_rgba_unmultiplied, simplified grouping

3808fcec8f
* widget rounding based on grouping, atomic background color, simplified config, style on grouping

be45d14f6d
* renamed Side to Alignment, group spacing

be45d14f6d
* proper widget spacing based on alignment

b43a5bda69
* added widget_spacing to config

c18e5f4dbe
* test commit

cba2b2f7ac
* refactoring of render and grouping, widget spacing WIP

9311cb00ec
* simplify no_spacing

36c267246b
* correct spacing on komorebi and network widgets (WIP)

85a41bf5b2
* correct widget spacing on all widgets

50b49ccf69
* refactoring widget spacing

9ec67ad988
* account for ui item_spacing when setting the widget_spacing

e88a2fd9c0
* format

komorebi-bar/src/widget.rs

@@ -12,6 +12,7 @@ use crate::memory::Memory;
 use crate::memory::MemoryConfig;
 use crate::network::Network;
 use crate::network::NetworkConfig;
+use crate::render::RenderConfig;
 use crate::storage::Storage;
 use crate::storage::StorageConfig;
 use crate::time::Time;
@@ -23,7 +24,7 @@ use serde::Deserialize;
 use serde::Serialize;
 
 pub trait BarWidget {
-    fn render(&mut self, ctx: &Context, ui: &mut Ui);
+    fn render(&mut self, ctx: &Context, ui: &mut Ui, config: &mut RenderConfig);
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]