Merge remote-tracking branch 'origin/develop' into develop

# Conflicts:
#	aws_lambda_powertools/metrics/provider/__init__.py
#	aws_lambda_powertools/metrics/provider/base.py

Author: roger-zhangg

aws_lambda_powertools/metrics/__init__.py

@@ -1,14 +1,18 @@
 """CloudWatch Embedded Metric Format utility
 """
-from .base import MetricResolution, MetricUnit
-from .exceptions import (
+from aws_lambda_powertools.metrics.base import MetricResolution, MetricUnit
+from aws_lambda_powertools.metrics.exceptions import (
     MetricResolutionError,
     MetricUnitError,
     MetricValueError,
     SchemaValidationError,
 )
-from .metric import single_metric
-from .metrics import EphemeralMetrics, Metrics
+from aws_lambda_powertools.metrics.metric import single_metric
+from aws_lambda_powertools.metrics.metrics import EphemeralMetrics, Metrics
+from aws_lambda_powertools.metrics.provider import (
+    CloudWatchEMFProvider,
+    MetricsProvider,
+)
 
 __all__ = [
     "Metrics",
@@ -20,4 +24,6 @@
     "MetricResolutionError",
     "SchemaValidationError",
     "MetricValueError",
+    "CloudWatchEMFProvider",
+    "MetricsProvider",
 ]