Update Swashbuckle and improve generated OpenAPI files (#6066)

* Improve generated OpenAPI files

* Nullable

* Fmt

* Correct powershell command

* Fix name

* Add some tests

* Fmt

* Switch to using json naming policy

test/SharedWeb.Test/EncryptedStringSchemaFilterTest.cs

@@ -0,0 +1,60 @@
+using Bit.Core.Utilities;
+using Bit.SharedWeb.Swagger;
+using Microsoft.OpenApi.Models;
+using Swashbuckle.AspNetCore.SwaggerGen;
+
+
+namespace SharedWeb.Test;
+
+public class EncryptedStringSchemaFilterTest
+{
+    private class TestClass
+    {
+        [EncryptedString]
+        public string SecretKey { get; set; }
+
+        public string Username { get; set; }
+
+        [EncryptedString]
+        public int Wrong { get; set; }
+    }
+
+    [Fact]
+    public void AnnotatedStringSetsFormat()
+    {
+        var schema = new OpenApiSchema
+        {
+            Properties = new Dictionary<string, OpenApiSchema> { { "secretKey", new() } }
+        };
+        var context = new SchemaFilterContext(typeof(TestClass), null, null, null);
+        var filter = new EncryptedStringSchemaFilter();
+        filter.Apply(schema, context);
+        Assert.Equal("x-enc-string", schema.Properties["secretKey"].Format);
+    }
+
+    [Fact]
+    public void NonAnnotatedStringIsIgnored()
+    {
+        var schema = new OpenApiSchema
+        {
+            Properties = new Dictionary<string, OpenApiSchema> { { "username", new() } }
+        };
+        var context = new SchemaFilterContext(typeof(TestClass), null, null, null);
+        var filter = new EncryptedStringSchemaFilter();
+        filter.Apply(schema, context);
+        Assert.Null(schema.Properties["username"].Format);
+    }
+
+    [Fact]
+    public void AnnotatedWrongTypeIsIgnored()
+    {
+        var schema = new OpenApiSchema
+        {
+            Properties = new Dictionary<string, OpenApiSchema> { { "wrong", new() } }
+        };
+        var context = new SchemaFilterContext(typeof(TestClass), null, null, null);
+        var filter = new EncryptedStringSchemaFilter();
+        filter.Apply(schema, context);
+        Assert.Null(schema.Properties["wrong"].Format);
+    }
+}