feat: add exception property assertions (StackTrace, Data, HResult)

[thomhurst]

Description

Exception assertions currently support Message and InnerException validation, but lack:

• StackTrace content validation
• HResult validation
• Data dictionary content validation
• Full fluent chaining for exception property assertions

Why

Testing exception behavior often requires validating that the stack trace points to the right location or data is properly attached.

Suggested Approach

.Throws<MyException>()
  .And.HasMessage(msg => msg.Contains("..."))
  .And.HasStackTrace(st => st.Contains("MethodName"))
  .And.WithData(dict => dict.ContainsKey("ErrorCode"))