tblgen bugfixes (keyword arguments and function names)

[jumerckx]

• fix keyword before positional arguments (Incorrect wrapper generation when optional operand is followed by mandatory arguments. #30)
• fix conversion of operations with multiple dots (.) in their name.

[vchuravy]

JuliaPackaging/Yggdrasil#7957

[Pangoraw]

I think this case needs to be handled (operation name starting with a number):

# Error @ /home/runner/work/MLIR.jl/MLIR.jl/src/Dialects/15/ArmNeon.jl:46:10
"""
function 2d_sdot(a::Value, b::Value, c::Value; res::MLIRType, location=Location())
#        ╙ ── Invalid signature in function definition