Provide configuration option to configure path of OTEL metrics exporter

### Description Currently Airflow does not allow to configure path in [OTEL metrics exporter](https://github.com/apache/airflow/blob/2.10.2/airflow/metrics/otel_logger.py#L391C1-L403C56) ```python def get_otel_logger(cls) -> SafeOtelLogger: host = conf.get("metrics", "otel_host") # ex: "breeze-otel-collector" port = conf.getint("metrics", "otel_port") # ex: 4318 prefix = conf.get("metrics", "otel_prefix") # ex: "airflow" ssl_active = conf.getboolean("metrics", "otel_ssl_active") # PeriodicExportingMetricReader will default to an interval of 60000 millis. interval = conf.getint("metrics", "otel_interval_milliseconds", fallback=None) # ex: 30000 debug = conf.getboolean("metrics", "otel_debugging_on") resource = Resource(attributes={SERVICE_NAME: "Airflow"}) protocol = "https" if ssl_active else "http" endpoint = f"{protocol}://{host}:{port}/v1/metrics" ``` And some of the metrics collectors, e.g. VictoriaMetrics expect the metrics to be sent to different path - `/opentelemetry/api/v1/push` - `/insert/0/opentelemetry/api/v1/push` It will be great to have the metrics path to be configurable, like the following ```python def get_otel_logger(cls) -> SafeOtelLogger: host = conf.get("metrics", "otel_host") # ex: "breeze-otel-collector" port = conf.getint("metrics", "otel_port") # ex: 4318 path = conf.get("metrics", "otel_path", fallback="/v1/metrics") # ex: "/opentelemetry/api/v1/push" prefix = conf.get("metrics", "otel_prefix") # ex: "airflow" ssl_active = conf.getboolean("metrics", "otel_ssl_active") # PeriodicExportingMetricReader will default to an interval of 60000 millis. interval = conf.getint("metrics", "otel_interval_milliseconds", fallback=None) # ex: 30000 debug = conf.getboolean("metrics", "otel_debugging_on") resource = Resource(attributes={SERVICE_NAME: "Airflow"}) protocol = "https" if ssl_active else "http" endpoint = f"{protocol}://{host}:{port}{path}" ``` ### Use c…