Mohanad 'Mohsen' Mohamed

Before merging this pull request, These pull requests https://github.com/google/globalfoundries-pdk-ip-gf180mcu_fd_ip_sram/pull/5 and https://github.com/google/globalfoundries-pdk-libs-gf180mcu_fd_io/pull/2 should be merged first to solve 7 warnings found in this build https://gf180mcu-pdk--35.org.readthedocs.build/en/35/

This PR should be merged after all these: - google/open-source-pdks#18 - https://github.com/google/gf180mcu-pdk/pull/39 - google/globalfoundries-pdk-ip-gf180mcu_fd_ip_sram#8 - google/globalfoundries-pdk-libs-gf180mcu_fd_io#4 - google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu7t5v0#8 - google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu9t5v0#11

Renamed the extension of role as in https://github.com/google/open-source-pdks/pull/18

Latest update: this PR should be merged after all these: - google/open-source-pdks#18 - https://github.com/google/gf180mcu-pdk/pull/39 - google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu7t5v0#8 - google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu9t5v0#11 - https://github.com/google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu7t5v0/pull/9 - https://github.com/google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu9t5v0/pull/12

Added exclusion of `code-of-conduct.rst` and `contributing.rst` in `conf.py`

I have found that the last commit on main branch already contains symbolic link to [open-source-pdks](https://github.com/google/open-source-pdks) which contains `naming.rst` also. But still we will need the changes in: `conf.py` `extra.css`

`naming.rst` is removed and `index.rst` is the default with no edits.

I'm afraid that may not happen, at least for `conf.py`, as it's used by read-the-docs/sphinx to configure the docs build. The problem is each project may use options different than...

I have edit the required files to depend on `open-source-pdks` This PR https://github.com/google/open-source-pdks/pull/18 should be merged first to take effect.

@mithro I have fixed the name as requested from `ext.py` to `sphinx_pdk_roles.py`