.Net: Add JsonConverter's to handle bool values when converting from PromptExecutionSettings

[markwallace-microsoft]

Motivation and Context

Closes #11304

Description

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[markwallace-microsoft]

Following unit tests failed in integration test pipeline but this looks unrelated to the PR

[xUnit.net 00:00:00.69]     SemanticKernel.Connectors.AzureOpenAI.UnitTests.KernelCore.KernelTests.FunctionUsageMetricsAreCapturedByTelemetryAsExpected [FAIL]
[xUnit.net 00:00:00.69]       Assert.Contains() Failure: Item not found in collection
[xUnit.net 00:00:00.69]       Collection: [55]
[xUnit.net 00:00:00.69]       Not found:  12

[markwallace-microsoft]

Another unrelated test failure:

[xUnit.net 00:00:02.36]     SemanticKernel.Functions.UnitTests.OpenApi.Extensions.ApiManifestKernelExtensionsTests.ItCanCreatePluginFromApiManifestWithDescriptionParameterAsync [FAIL]
[xUnit.net 00:00:02.36]       Microsoft.SemanticKernel.HttpOperationException : An error occurred while sending the request.
[xUnit.net 00:00:02.36]       ---- System.Net.Http.HttpRequestException : An error occurred while sending the request.
[xUnit.net 00:00:02.36]       -------- System.IO.IOException : Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host..
[xUnit.net 00:00:02.36]       ------------ System.Net.Sockets.SocketException : An existing connection was forcibly closed by the remote host.