Add [McpServerPrompt] support #126
                
     Merged
            
            
          
      
        
          +1,950
        
        
          −550
        
        
          
        
      
    
  
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
Ignore the first commit; that's just #124, which this builds on top of.
I also still need to add tests. I could also use some help on a better word than "Items" when talking about the group of things that is tools, prompts, resources, etc.
This adds support for declaratively and programmatically created prompts, e.g. an [McpServerPrompt] attribute to tag functions that should be used as prompts, a set of McpServerPrompt.Create for programmatically created prompt instances, etc.
Closes #70