Add HCS JSON parsing demo

src/main/java/org/embl/mobie/lib/hcs/omezarr/Column.java

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+package org.embl.mobie.lib.hcs.omezarr;
+
+public class Column
+{
+    public String name;
+}

src/main/java/org/embl/mobie/lib/hcs/omezarr/HCSMetadata.java

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+package org.embl.mobie.lib.hcs.omezarr;
+
+public class HCSMetadata
+{
+    public Plate plate;
+}

src/main/java/org/embl/mobie/lib/hcs/omezarr/Image.java

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+package org.embl.mobie.lib.hcs.omezarr;
+
+public class Image
+{
+    public String path;
+}

src/main/java/org/embl/mobie/lib/hcs/omezarr/Plate.java

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+package org.embl.mobie.lib.hcs.omezarr;
+
+import java.util.List;
+
+public class Plate
+{
+    public List< Column > columns;
+    public int field_count;
+    public String name;
+    public List< Row > rows;
+    public List< Well > wells;
+}

src/main/java/org/embl/mobie/lib/hcs/omezarr/Row.java

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+package org.embl.mobie.lib.hcs.omezarr;
+
+public class Row
+{
+    public String name;
+}

src/main/java/org/embl/mobie/lib/hcs/omezarr/Well.java

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+package org.embl.mobie.lib.hcs.omezarr;
+
+import java.util.List;
+
+public class Well
+{
+    public String path;
+    public List< Image > images;
+}

src/main/java/org/embl/mobie/lib/hcs/omezarr/WellMetadata.java

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+package org.embl.mobie.lib.hcs.omezarr;
+
+import java.util.List;
+
+public class WellMetadata
+{
+    public Well well;
+}

src/test/java/develop/ParseOMEZarrHCSMetadata.java

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+package develop;
+
+import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
+import org.embl.mobie.io.util.IOHelper;
+import org.embl.mobie.lib.hcs.omezarr.HCSMetadata;
+import org.embl.mobie.lib.hcs.omezarr.Well;
+import org.embl.mobie.lib.hcs.omezarr.WellMetadata;
+import org.embl.mobie.lib.serialize.JsonHelper;
+
+import java.io.IOException;
+import java.lang.reflect.Type;
+
+public class ParseOMEZarrHCSMetadata
+{
+
+    public static final String ZATTRS = "/.zattrs";
+
+    public static void main( String[] args ) throws IOException
+    {
+        Gson gson = JsonHelper.buildGson(false);
+
+        String url = "https://uk1s3.embassy.ebi.ac.uk/idr/zarr/v0.1/plates/5966.zarr";
+        final String plateJson = IOHelper.read( url + ZATTRS );
+        System.out.println( plateJson );
+        HCSMetadata hcsMetadata = gson.fromJson(plateJson, new TypeToken< HCSMetadata >() {}.getType());
+        String wellPath = hcsMetadata.plate.wells.get( 0 ).path;
+        System.out.printf( "Site path: " + wellPath );
+        String wellURL = url + "/" + wellPath ;
+        final String wellJson = IOHelper.read( wellURL + ZATTRS );
+        System.out.println( wellJson );
+
+        WellMetadata wellMetadata = gson.fromJson( wellJson, new TypeToken< WellMetadata >() {}.getType() );
+        String imagePath = wellMetadata.well.images.get( 0 ).path;
+        String imageURL = url + "/" + wellPath + "/" + imagePath;
+        final String imageJson = IOHelper.read( imageURL + ZATTRS );
+        System.out.println( imageJson );
+    }
+}