Add netcdf data class for ground motions

src/aashto/src/main/java/gov/usgs/earthquake/nshmp/netcdf/data/NetcdfDataGroundMotions.java

+package gov.usgs.earthquake.nshmp.netcdf.data;
+
+import gov.usgs.earthquake.nshmp.geo.Location;
+import gov.usgs.earthquake.nshmp.geo.Region;
+import gov.usgs.earthquake.nshmp.geo.Regions;
+
+/**
+ * NetCDF data container for ground motions (AASHTO) data.
+ *
+ * @author U.S. Geological Survey
+ */
+public class NetcdfDataGroundMotions extends NetcdfData {
+
+  private final Region region;
+
+  public NetcdfDataGroundMotions(NetcdfData netcdfData) {
+    super(NetcdfData.Builder.copyOf(netcdfData));
+    region = Regions.createRectangular("Region", minimumBounds(), maximumBounds());
+  }
+
+  /**
+   * Whether a location is contained in the bounds.
+   *
+   * @param location The location to test
+   */
+  public boolean contains(Location location) {
+    return region.contains(location);
+  }
+}