Add --exclude-tool-types and --list-tools flags.

[Kyu]

Addresses #13

Usage examples:

SharpTools.StdioServer.exe --list-tools
Tools:
  AnalysisTools
    - SharpTool_AnalyzeComplexity
    - SharpTool_FindReferences
    - SharpTool_GetMembers
    - SharpTool_ListImplementations
    - SharpTool_ManageAttributes
    - SharpTool_ManageUsings
    - SharpTool_SearchDefinitions
    - SharpTool_ViewDefinition
  DocumentTools
    - SharpTool_CreateRoslynDocument
    - SharpTool_OverwriteRoslynDocument
    - SharpTool_ReadRawFromRoslynDocument
    - SharpTool_ReadTypesFromRoslynDocument
  MiscTools
    - SharpTool_RequestNewTool
  ModificationTools
    - SharpTool_AddMember
    - SharpTool_FindAndReplace
    - SharpTool_MoveMember
    - SharpTool_OverwriteMember
    - SharpTool_RenameSymbol
    - SharpTool_Undo
  PackageTools
  SolutionTools
    - SharpTool_LoadProject
    - SharpTool_LoadSolution

then e.g

SharpTools.StdioServer.exe --exclude-tool-types ModificationTools --exclude-tool-types DocumentTools
# OR
SharpTools.StdioServer.exe --exclude-tool-types ModificationTools DocumentTools

[kooshi]

While I like where you're going with this, I think the mechanism to exclude tools should be either more flexible, or more specific to what people need.

I'm guessing you did this to put it in a "read-only" mode, right?

While this accomplishes that, excluding all DocumentTools also omits the read-only document tools.

I think it would make more sense to have a --read-only flag, which just filters tools based on the ReadOnly property of the McpServerTool attribute that each tool has.