[beat receivers] implement long term solution for otel runtime supported input types

[leehinman]

Currently we have:

elastic-agent/internal/pkg/otel/translate/otelconfig.go

Line 55 in 8d78a8a

OtelSupportedFilebeatInputTypes = []string{

elastic-agent/internal/pkg/otel/translate/otelconfig.go

Line 61 in 8d78a8a

OtelSupportedMetricbeatInputTypes = []string{

To control what input types are supported for the otel runtime. This issue is to explore solutions that are easier to maintain long term.