refactor dir structure and add unit tests

Author: yiyuan-he

exporters/aws-otel-otlp-udp-exporter/aws_otel_otlp_udp_exporter/__init__.py

@@ -31,3 +31,6 @@ dependencies = [
 
 [project.urls]
 Homepage = "https://github.com/aws-observability/aws-otel-python-instrumentation/tree/main/exporters"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/amazon"]

exporters/aws-otel-otlp-udp-exporter/pyproject.toml

@@ -0,0 +1,24 @@
+from .exporter import (
+    # Classes
+    UdpExporter,
+    OTLPUdpMetricExporter,
+    OTLPUdpSpanExporter,
+    
+    # Constants
+    DEFAULT_ENDPOINT,
+    FORMAT_OTEL_SAMPLED_TRACES_BINARY_PREFIX,
+    FORMAT_OTEL_UNSAMPLED_TRACES_BINARY_PREFIX,
+    PROTOCOL_HEADER,
+    FORMAT_OTEL_METRICS_BINARY_PREFIX
+)
+
+__all__ = [
+    "UdpExporter",
+    "OTLPUdpMetricExporter",
+    "OTLPUdpSpanExporter",
+    "DEFAULT_ENDPOINT",
+    "FORMAT_OTEL_SAMPLED_TRACES_BINARY_PREFIX",
+    "FORMAT_OTEL_UNSAMPLED_TRACES_BINARY_PREFIX",
+    "PROTOCOL_HEADER",
+    "FORMAT_OTEL_METRICS_BINARY_PREFIX"
+]