DOCSP-47555 updates db connection pages

[jwilson-mdb]

DESCRIPTION

Refactors the connect to database content s.t. each database has its own page, and each page contains all content necessary to successfully connect.

Also moves the migration pre-requisites and service acct creation docs to nest beneath each connection page.

Note for Reviewer
The build log contains many Page not included in any toctree... errors

• Unused pages will be removed in DOCSP-47546
  • Pages are being left in place for now to facilitate:
    • content reorganization updates
    • creation of redirects before publishing feature branch

STAGING

Content Changes:

• mysql
• oracle
• postgres
• sql server
• db2
• sybase
• mongodb

Revised to support new content changes (new ref labels etc.):

• Link to Connect to Databases in:
  • Convert Stored Procedures
  • Convert Views
  • Refresh Database Objects
• Removed invalid ref in Mapping Rules intro paragraph

JIRA

https://jira.mongodb.org/browse/DOCSP-47555

BUILD LOG

Self-Review Checklist

• Is this free of any warnings or errors in the RST?
• Is this free of spelling errors?
• Is this free of grammatical errors?
• Is this free of staging / rendering issues?
• Are all the links working?

External Review Requirements

What's expected of an external reviewer?

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[nvillahermosa-mdb]

Leaving my current thoughts on this, happy to discuss further in Slack / Zoom.