feat: Trilogy attribute semantic convention stability

[hannahramadan]

This PR is intended to assist in the transition from the old to new database semantic convention attribute names. Per the database semantic convention stability migration spec, users can set the environment variable OTEL_SEMCONV_STABILITY_OPT_IN to:

• database to emit stable conventions only
• database/dup to emit both old and the stable conventions
• a blank env var—or a value not containing either of the above delimited with commas—will emit old conventions only

The agent is required to maintain this bridge for 6 months and may drop the environment variable in the next major version and emit only the stable database and networking conventions.

This approach was approved for HTTP migration in #1547

Changes (Old -> Stable):

• db.system → db.system.name
• net.peer.name → server.address
• db.name → db.namespace
• db.statement → db.query.text

Removed in stable:

• db.user
• db.instance.id
• peer.service

Added in stable:

• server.port
• error.type
• db.response.status_code

[robbkidd]