docs/config-params-guc-list is incomplete

Hi!

My colleagues and I was writing user-facing documentation, and we found out that `docs/config-params-guc-list` is incomplete. Many useful parameters are not documented.

List of parameters that referenced in docs, but not in guc-list:
* `gp_cached_segworkers_threshold`
* `lock_timeout`
* `max_slot_wal_keep_size`
* `log_*`

List of useful parameters with no mentioning in Cloudberry documentation:
* `gp_add_column_inherits_table_setting`
* `gp_max_plan_size`
* `gp_max_slices`
* `gp_resource_group_memory_limit`
* `master_shared_buffers`
* `max_locks_per_transaction`
* `segment_shared_buffers`

For some of them - are just Postgres GUCs, some - Cloudberry-specific.

Start with docs/config-params-guc-list and compare its entries with the parameters named in the issue and the documentation references. Check which PostgreSQL and Cloudberry-specific parameters belong in the list, then update the documentation so all confirmed useful parameters are represented.

Written by the indexing model from the issue text.