Clean up Widgets

* Move /Widgets/Live/* to /Live/*
* Move /Widgets/Prompt/* to /Prompts/*
* Move tests and expectations to match the new locations

test/Spectre.Console.Tests/Unit/Live/Progress/ProgressTests.cs

@@ -9,7 +9,7 @@ using Xunit;
 namespace Spectre.Console.Tests.Unit
 {
     [UsesVerify]
-    [ExpectationPath("Widgets/Progress")]
+    [ExpectationPath("Live/Progress")]
     public sealed class ProgressTests
     {
         [Fact]

test/Spectre.Console.Tests/Unit/Live/StatusTests.cs

@@ -9,7 +9,7 @@ using Xunit;
 namespace Spectre.Console.Tests.Unit
 {
     [UsesVerify]
-    [ExpectationPath("Widgets/Status")]
+    [ExpectationPath("Live/Status")]
     public sealed class StatusTests
     {
         public sealed class DummySpinner1 : Spinner

test/Spectre.Console.Tests/Unit/Prompts/TextPromptTests.cs

@@ -9,7 +9,7 @@ using Spectre.Verify.Extensions;
 namespace Spectre.Console.Tests.Unit
 {
     [UsesVerify]
-    [ExpectationPath("Widgets/Prompt/Text")]
+    [ExpectationPath("Prompts/Text")]
     public sealed class TextPromptTests
     {
         [Fact]

test/Spectre.Console.Tests/Unit/Rendering/Borders/BoxBorderTests.cs

@@ -9,7 +9,7 @@ using Xunit;
 namespace Spectre.Console.Tests.Unit
 {
     [UsesVerify]
-    [ExpectationPath("Borders/Box")]
+    [ExpectationPath("Rendering/Borders/Box")]
     public sealed class BoxBorderTests
     {
         [UsesVerify]

test/Spectre.Console.Tests/Unit/Rendering/Borders/TableBorderTests.cs

@@ -9,7 +9,7 @@ using Xunit;
 namespace Spectre.Console.Tests.Unit
 {
     [UsesVerify]
-    [ExpectationPath("Borders/Table")]
+    [ExpectationPath("Rendering/Borders/Table")]
     public sealed class TableBorderTests
     {
         [UsesVerify]