restructure as one dll

[stephenegriffin]

This pull request removes the BlockParser project as a standalone dependency and integrates its components directly into the MAPIInspector project. The changes simplify the project structure by consolidating code and removing redundant references.

Removal of BlockParser project:

• Removed the BlockParser project reference from BlockParserTests.csproj (MAPIInspector/Source/BlockParserTests/BlockParserTests.csproj).
• Removed the BlockParser project reference from MAPIInspector.csproj and added its individual files directly to the MAPIInspector project (MAPIInspector/Source/MAPIInspector.csproj). [1] [2]
• Removed the BlockParser project entry from the solution file (MAPIInspector.sln).

Build configuration updates:

• Removed build configurations for the BlockParser project from the solution file (MAPIInspector.sln).