editorconfig: Set default encoding to UTF-8 (#5793)

* editorconfig: Add default charset

* Change file encoding from UTF-8-BOM to UTF-8

src/ARMeilleure/IntermediateRepresentation/BasicBlockFrequency.cs

@@ -1,4 +1,4 @@
-namespace ARMeilleure.IntermediateRepresentation
+namespace ARMeilleure.IntermediateRepresentation
 {
     enum BasicBlockFrequency
     {

src/ARMeilleure/IntermediateRepresentation/Comparison.cs

@@ -1,4 +1,4 @@
-namespace ARMeilleure.IntermediateRepresentation
+namespace ARMeilleure.IntermediateRepresentation
 {
     enum Comparison
     {

src/ARMeilleure/IntermediateRepresentation/IIntrusiveListNode.cs

@@ -1,4 +1,4 @@
-namespace ARMeilleure.IntermediateRepresentation
+namespace ARMeilleure.IntermediateRepresentation
 {
     interface IIntrusiveListNode<T>
     {

src/ARMeilleure/IntermediateRepresentation/IntrusiveList.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;

src/ARMeilleure/IntermediateRepresentation/PhiOperation.cs

@@ -1,4 +1,4 @@
-using ARMeilleure.Translation;
+using ARMeilleure.Translation;
 using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
 
 namespace ARMeilleure.IntermediateRepresentation