Move exceptions related to iText to proper exceptions package

DEVSIX-5741

Autoported commit.
Original commit hash: [4e8659426]

Author: Egor Martsynkovsky

itext.tests/itext.barcodes.tests/itext/barcodes/BarcodeEANUnitTest.cs

@@ -42,7 +42,7 @@ source product.
 */
 using System;
 using System.IO;
-using iText.Kernel;
+using iText.Kernel.Exceptions;
 using iText.Kernel.Geom;
 using iText.Kernel.Pdf;
 using iText.Test;

itext.tests/itext.barcodes.tests/itext/barcodes/BarcodePDF417Test.cs

@@ -43,8 +43,8 @@ source product.
 using System;
 using System.IO;
 using iText.Barcodes.Exceptions;
-using iText.Kernel;
 using iText.Kernel.Colors;
+using iText.Kernel.Exceptions;
 using iText.Kernel.Pdf;
 using iText.Kernel.Pdf.Canvas;
 using iText.Kernel.Pdf.Xobject;

itext.tests/itext.forms.tests/itext/forms/XfdfUnitTest.cs

@@ -21,6 +21,7 @@ You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 using System;
+using iText.Forms.Exceptions;
 using iText.Forms.Xfdf;
 using iText.Test;
 

itext.tests/itext.forms.tests/itext/forms/XfdfWriterTest.cs

@@ -42,6 +42,7 @@ source product.
 */
 using System;
 using System.IO;
+using iText.Forms.Exceptions;
 using iText.Forms.Xfdf;
 using iText.Kernel.Pdf;
 using iText.Kernel.Utils;

itext.tests/itext.forms.tests/itext/forms/fields/PdfFormFieldUnitTest.cs

@@ -22,7 +22,7 @@ You should have received a copy of the GNU Affero General Public License
 */
 using iText.Forms.Exceptions;
 using iText.IO.Source;
-using iText.Kernel;
+using iText.Kernel.Exceptions;
 using iText.Kernel.Pdf;
 using iText.Test;
 

itext.tests/itext.forms.tests/itext/forms/xfa/SecurityTestXmlParserFactory.cs

@@ -44,7 +44,7 @@ source product.
 using System;
 using System.IO;
 using System.Xml;
-using iText.Kernel;
+using iText.Kernel.Exceptions;
 using iText.Kernel.Utils;
 
 namespace iText.Forms.Xfa

itext.tests/itext.forms.tests/itext/forms/xfa/XfaSecurityTest.cs

@@ -43,7 +43,7 @@ source product.
 using System;
 using System.IO;
 using iText.Forms;
-using iText.Kernel;
+using iText.Kernel.Exceptions;
 using iText.Kernel.Pdf;
 using iText.Kernel.Utils;
 using iText.Test;

itext.tests/itext.forms.tests/itext/forms/xfdf/SecurityTestXmlParserFactory.cs

@@ -43,7 +43,7 @@ source product.
 
 using System.IO;
 using System.Xml;
-using iText.Kernel;
+using iText.Kernel.Exceptions;
 using iText.Kernel.Utils;
 
 namespace iText.Forms.Xfdf

itext.tests/itext.forms.tests/itext/forms/xfdf/XfdfSecurityTest.cs

@@ -42,7 +42,7 @@ source product.
 */
 using System;
 using System.IO;
-using iText.Kernel;
+using iText.Kernel.Exceptions;
 using iText.Kernel.Utils;
 using iText.Test;
 

itext.tests/itext.io.tests/itext/io/font/FontCacheNoFontAsianTest.cs

@@ -127,30 +127,32 @@ public virtual void GetRegistryNamesNoFontAsian() {
         public virtual void GetCid2UniCMapNoFontAsian() {
             // Without font-asian module in the class path
             // no CMap can be found.
-            NUnit.Framework.Assert.Catch(typeof(iText.IO.IOException), () => FontCache.GetCid2UniCmap("UniJIS-UTF16-H"
+            NUnit.Framework.Assert.Catch(typeof(iText.IO.Exceptions.IOException), () => FontCache.GetCid2UniCmap("UniJIS-UTF16-H"
                 ));
         }
 
         [NUnit.Framework.Test]
         public virtual void GetUni2CidCMapNoFontAsian() {
             // Without font-asian module in the class path
             // no CMap can be found.
-            NUnit.Framework.Assert.Catch(typeof(iText.IO.IOException), () => FontCache.GetUni2CidCmap("UniJIS-UTF16-H"
+            NUnit.Framework.Assert.Catch(typeof(iText.IO.Exceptions.IOException), () => FontCache.GetUni2CidCmap("UniJIS-UTF16-H"
                 ));
         }
 
         [NUnit.Framework.Test]
         public virtual void GetByte2CidCMapNoFontAsian() {
             // Without font-asian module in the class path
             // no CMap can be found.
-            NUnit.Framework.Assert.Catch(typeof(iText.IO.IOException), () => FontCache.GetByte2CidCmap("78ms-RKSJ-H"));
+            NUnit.Framework.Assert.Catch(typeof(iText.IO.Exceptions.IOException), () => FontCache.GetByte2CidCmap("78ms-RKSJ-H"
+                ));
         }
 
         [NUnit.Framework.Test]
         public virtual void GetCid2ByteCMapNoFontAsian() {
             // Without font-asian module in the class path
             // no CMap can be found.
-            NUnit.Framework.Assert.Catch(typeof(iText.IO.IOException), () => FontCache.GetCid2Byte("78ms-RKSJ-H"));
+            NUnit.Framework.Assert.Catch(typeof(iText.IO.Exceptions.IOException), () => FontCache.GetCid2Byte("78ms-RKSJ-H"
+                ));
         }
 
         private class FontProgramMock : FontProgram {