Merge 4 dirs in EE doc/user/project/ to CE

Description

Merge EE docs to CE:

• doc/user/project/operations
• doc/user/project/packages
• doc/user/project/settings
• doc/user/project/web_ide

MR workflow

The following are stuff we gathered during our MR tests (e.g., !21089 (closed)) (if you find something that needs to change, comment in &199 (closed)):

1. Locally copy the EE dir to CE
2. Create MR
3. Using our documented EE/CE doc alignment standards:
   1. Convert URLs to relative URLs. If a link fails the check because it does not exist yet in CE (from another to-be-merged section) keep absolute URL. We’ll do a find/replace later.
   2. If a feature was only in EE and had no tier-specific badge, look up the feature and add one. If any question, ask relevant PM.
4. Create EE equivalent MR