[fir][NFC] Move parser/printer/builder to cpp file

[clementval]

Summary

Move the parsers, printers and builders from the TableGen file
to the .cpp file. Remaining parsers, printers and builders will be
moved when we update the operations.

This patch is part of the upstreaming effort from fir-dev branch.

[mehdi_amini]

Could more parser be using the declarative assembly syntax?

[clementval]

In D110626#3028022, @mehdi_amini wrote:

Could more parser be using the declarative assembly syntax?

There is some parsers that could be move to the assemblyFormat. I guess it would be better to do it in a follow up patch since here we are just moving existing parsers out of the td file.