We try hard to avoid creating unnecessary JsonSerializerOptions, as each can have a non-trivial overhead due to how reflection is used by JsonSerializer and the JSO instance serving as a cache. Rather than creating a new JSO for each transport / endpoint, this can just use a singleton. The only thing it loses is logging when the converter fails, but all of those paths are also throwing an exception, which can be logged higher in the call stack.
* Improve tool handling
* Rework stuff with new hosting options
* Update readme
* Fix build
* Try run client tests
* Fix build
* Fix issues on linux
* Try to run testserver on linux
* Fix test issue
* Fix code smells
* Server support (stdio)
* TestServer project
* Refactored McpClient class to extract shared endpoint logic (with McpServer) to a base class, McpJsonRpcEndpoint.
* Improved xmldoc comments for protocol types, mirroring specification schema comments.
* Update README.MD
