chore: cleaning up visual border styles

It was defaulting to the blue. This doesn't get everything but it gets
some things. Unfortunately, every single thing is a beautiful and unique
snowflake and has to be fixed in drastically different ways. I wish I
was kidding. So we'll have to handle them as they come up.

Author: ProgrammingByPermutation

src/TwitchStreamingTools/Views/MainWindow.axaml

@@ -19,32 +19,65 @@
         Icon="/Assets/logo.ico"
         Title="Twitch Streaming Tools">
     <Window.Styles>
+        <Style Selector="Slider">
+            <Setter Property="FocusAdorner">
+                <FocusAdornerTemplate>
+                    <Rectangle Stroke="rgb(204, 200, 175)" StrokeThickness="2" />
+                </FocusAdornerTemplate>
+            </Setter>
+        </Style>
+        <Style Selector="CheckBox">
+            <Setter Property="FocusAdorner">
+                <FocusAdornerTemplate>
+                    <Rectangle Stroke="rgb(204, 200, 175)" StrokeThickness="2" />
+                </FocusAdornerTemplate>
+            </Setter>
+        </Style>
         <Style Selector="Label">
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
         </Style>
         <Style Selector="TextBox">
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
+            <Setter Property="SelectionBrush">rgb(54, 52, 46)</Setter>
         </Style>
         <Style Selector="TextBox:focus">
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
         </Style>
+        <Style Selector="TextBox:focus /template/ Border#PART_BorderElement">
+            <Setter Property="BorderBrush">rgb(204, 200, 175)</Setter>
+        </Style>
         <Style Selector="TextBlock">
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
         </Style>
         <Style Selector="Button">
             <Setter Property="Background">#353332</Setter>
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
+            <Setter Property="FocusAdorner">
+                <FocusAdornerTemplate>
+                    <Rectangle Stroke="rgb(204, 200, 175)" StrokeThickness="2" />
+                </FocusAdornerTemplate>
+            </Setter>
         </Style>
         <Style Selector="ListBoxItem">
             <Setter Property="Background">#353332</Setter>
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
+            <Setter Property="FocusAdorner">
+                <FocusAdornerTemplate>
+                    <Rectangle Stroke="rgb(204, 200, 175)" StrokeThickness="2" />
+                </FocusAdornerTemplate>
+            </Setter>
         </Style>
         <Style Selector="ListBoxItem:selected /template/ ContentPresenter">
             <Setter Property="Background">#4F4D4C</Setter>
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
         </Style>
         <Style Selector="PathIcon">
             <Setter Property="Foreground">rgb(204, 200, 175)</Setter>
+            <Setter Property="FocusAdorner">
+                <FocusAdornerTemplate>
+                    <Rectangle Stroke="rgb(204, 200, 175)" StrokeThickness="2" />
+                </FocusAdornerTemplate>
+            </Setter>
         </Style>
     </Window.Styles>