Clean up database systems

[lmolkova]

Fixes #1023

Changes

• renames cache to intersystems_cache (cache is too broad)
• removes cloudscape in favor of derby "The Apache Derby project is based upon Cloudscape version 10, which IBM contributed to Apache in 2004." (see https://en.wikipedia.org/wiki/Apache_Derby, https://db.apache.org/ddlutils/databases/derby.html)
• removed coldfusion - it's a web-development platform, not a database. It can work with different databases.
• firstsql - no longer exists
• mssqlcompact - discontinued, last released in 2011, end-of-support in 2021

Merge requirement checklist

• CONTRIBUTING.md guidelines followed.
• Change log entry added, according to the guidelines in When to add a changelog entry.
  • If your PR does not need a change log, start the PR title with [chore]
• schema-next.yaml updated with changes to existing conventions.

[lmolkova]

I did not find any usage of cloudscape, coldfusion or firstsql in OpenTelemetry repositories.
Checked cache in java, python and JS instrumentations - no mentions.

mssqlcompact is still used by .NET OpenTelemetry.Instrumentation.EntityFrameworkCore, but the corresponding packages for mssqlcompact are deprecated (SqlServerCompact40, SqlServerCompact35) and have <50 downloads per day.
The other_sql can be used as a fallback option.