Move exceptions to its new package.

src/main/java/azgracompress/compression/IImageCompressor.java

 package azgracompress.compression;
 
+import azgracompress.compression.exception.ImageCompressionException;
+
 import java.io.DataOutputStream;
 
 public interface IImageCompressor {

src/main/java/azgracompress/compression/IImageDecompressor.java

 package azgracompress.compression;
 
+import azgracompress.compression.exception.ImageDecompressionException;
 import azgracompress.fileformat.QCMPFileHeader;
 
 import java.io.DataInputStream;

src/main/java/azgracompress/compression/ImageCompressor.java

 package azgracompress.compression;
 
 import azgracompress.cli.ParsedCliOptions;
+import azgracompress.compression.exception.ImageCompressionException;
 import azgracompress.fileformat.QCMPFileHeader;
 
 import java.io.BufferedOutputStream;

src/main/java/azgracompress/compression/ImageDecompressor.java

 package azgracompress.compression;
 
 import azgracompress.cli.ParsedCliOptions;
+import azgracompress.compression.exception.ImageDecompressionException;
 import azgracompress.fileformat.QCMPFileHeader;
 
 import java.io.*;

src/main/java/azgracompress/compression/SQImageCompressor.java

@@ -2,6 +2,7 @@ package azgracompress.compression;
 
 import azgracompress.U16;
 import azgracompress.cli.ParsedCliOptions;
+import azgracompress.compression.exception.ImageCompressionException;
 import azgracompress.data.ImageU16;
 import azgracompress.io.OutBitStream;
 import azgracompress.io.RawDataIO;

src/main/java/azgracompress/compression/SQImageDecompressor.java

 package azgracompress.compression;
 
 import azgracompress.cli.ParsedCliOptions;
+import azgracompress.compression.exception.ImageDecompressionException;
 import azgracompress.fileformat.QCMPFileHeader;
 import azgracompress.io.InBitStream;
 import azgracompress.utilities.Stopwatch;

src/main/java/azgracompress/compression/VQImageCompressor.java

 package azgracompress.compression;
 
 import azgracompress.cli.ParsedCliOptions;
+import azgracompress.compression.exception.ImageCompressionException;
 import azgracompress.data.Chunk2D;
 import azgracompress.data.ImageU16;
 import azgracompress.data.V2i;

src/main/java/azgracompress/compression/VQImageDecompressor.java

 package azgracompress.compression;
 
 import azgracompress.cli.ParsedCliOptions;
+import azgracompress.compression.exception.ImageDecompressionException;
 import azgracompress.data.*;
 import azgracompress.fileformat.QCMPFileHeader;
 import azgracompress.io.InBitStream;

src/main/java/azgracompress/compression/ImageCompressionException.java → src/main/java/azgracompress/compression/exception/ImageCompressionException.java

-package azgracompress.compression;
+package azgracompress.compression.exception;
 
 public class ImageCompressionException extends Exception {
     private final Exception innerException;

src/main/java/azgracompress/compression/ImageDecompressionException.java → src/main/java/azgracompress/compression/exception/ImageDecompressionException.java

-package azgracompress.compression;
+package azgracompress.compression.exception;
 
 public class ImageDecompressionException extends Exception {
     private final Exception innerException;