Add the missing .h files to the manifest.
Add the missing .h files to the manifest.

AlterCodex/nxppy,Schoberm/nxppy,AlterCodex/nxppy,tuvaergun/nxppy,tuvaergun/nxppy,Schoberm/nxppy,AlterCodex/nxppy,Schoberm/nxppy,tuvaergun/nxppy