Use sqlx Instead of String Formatting in TimescaleDB Provider

[YKawesome]

Description

Updates the TimescaleDB Provider to use sqlx instead of string formatting. The insertion statements have been updated:

const (
	insertEventDefSQL = `INSERT INTO eventDefs (id, component, name, severity, args)
		VALUES (:id, :component, :name, :severity, :args) ON CONFLICT DO NOTHING`
	insertEventSQL = `INSERT INTO events (eventDefId, time, timeSclk, message, source, args, ert)
		VALUES (:eventDefId, :time, :timeSclk, :message, :source, :args, :ert) ON CONFLICT DO NOTHING`
	insertTelemetryDefSQL = `INSERT INTO telemetryDefs (id, name, component)
		VALUES (:id, :name, :component) ON CONFLICT DO NOTHING`
	insertTelemetrySQL = `INSERT INTO telemetry (time, telemetryDefId, timeSclk, source, labels, key, valueType, integral, floating, boolval, string, bytes, ert)
		VALUES (:time, :telemetryDefId, :timeSclk, :source, :labels, :key, :valueType, :integral, :floating, :boolval, :string, :bytes, :ert) ON CONFLICT DO NOTHING`
)

Along with the ExecContext blocks:

if _, err := tx.NamedExecContext(ctx, insertEventDefSQL, map[string]any{
	"id":        ref.GetId(),
	"component": ref.GetComponent(),
	"name":      ref.GetName(),
	"severity":  ref.GetSeverity(),
	"args":      string(defArgs),
}); err != nil {
	return fmt.Errorf("failed to insert event def: %w", err)
}

Small changes were made to transactions (e.g. BeginTxx instead of BeginTx) to follow the sqlx methods.

Issues

Closes #80