Change repository to be auto-generated using the pythondata-auto

[mithro]

Currently this repo is manually created. We should make it auto-generated from the pythondata-auto tool like the other pythondata- modules.

Take a look at the modules.ini file.

You can see the following for the vexriscv repo;

[vexriscv]
type = cpu
human_name = VexRISCV
#src = https://github.com/litex-hub/litex-verilog-vexriscv
contents = verilog
license = License :: OSI Approved :: MIT License
license_spdx = MIT
gen_src = https://github.com/SpinalHDL/VexRISCV.git
git_describe = v1.0.1-265-g5f0c7a7
git_hash = 5f0c7a7faf6b65c907a93be6e3723e297d37ee71