[Fusion] Included subdirectories when reading source schemas (#8495)

Author: glen-84

src/HotChocolate/Fusion-vnext/src/Fusion.CommandLine/Commands/ComposeCommand.cs

@@ -484,7 +484,7 @@ private static async Task<IEnumerable<string>> ReadSourceSchemasAsync(
         {
             sourceSchemaFilePaths =
                 new DirectoryInfo(workingDirectory)
-                    .GetFiles("*.graphql*")
+                    .GetFiles("*.graphql*", SearchOption.AllDirectories)
                     .Where(f => IsGraphQLSchemaFile(f.Name))
                     .Select(i => i.FullName)
                     .ToImmutableSortedSet();

src/HotChocolate/Fusion-vnext/test/Fusion.CommandLine.Tests/ComposeCommandTests.cs

@@ -8,10 +8,10 @@ namespace HotChocolate.Fusion;
 public sealed class ComposeCommandTests
 {
     private static readonly string s_validExample1CompositeSchema =
-        File.ReadAllText("__resources__/valid-example-1/result/composite-schema.graphqls");
+        File.ReadAllText("__resources__/valid-example-1-result/composite-schema.graphqls");
 
     private static readonly string s_invalidExample1CompositeSchema =
-        File.ReadAllText("__resources__/invalid-example-1/result/composite-schema.graphqls");
+        File.ReadAllText("__resources__/invalid-example-1-result/composite-schema.graphqls");
 
     [Fact]
     public async Task Compose_ValidExample1_FromSpecified_ToStdOut()