[PL/CT] Extend residual output for more than one component and to Picard solver

See merge request !4451

[web] Replaced GitHub issue links with GitLab links.

See merge request !4468

Using single vector simplifies logic when filling in the values.

GitHub Issues have been disabled.

Update BaseLib's includes

See merge request !4463

Dmitry Yu. Naumov authored Jan 29, 2023 and Dmitry Yu. Naumov committed Jan 31, 2023

Using IWYU for guidelines.

[ci] Platform pipelines

See merge request ogs/ogs!4465

[ci] Pipeline refactoring

See merge request ogs/ogs!4464

Submesh residuum output for TH2M and TRM processes

See merge request ogs/ogs!4393

_local_assemblers were renamed to local_assemblers_, too, because the
assembly mixin requires a common name for that field.