Make GitErrorCategory and GitErrorCode public

Move them to LibGit2Sharp namespace to satisfy tests

Co-authored-by: Marcell van Rooyen <[email protected]>

Author: Alexander Ovchinnikov

LibGit2Sharp/Core/GitErrorCategory.cs

@@ -1,6 +1,6 @@
-namespace LibGit2Sharp.Core
+namespace LibGit2Sharp
 {
-    internal enum GitErrorCategory
+    public enum GitErrorCategory
     {
         Unknown = -1,
         None,
@@ -36,6 +36,8 @@ internal enum GitErrorCategory
         Filesystem,
         Patch,
         Worktree,
-        Sha1
+        Sha1,
+        Http,
+        Internal
     }
 }

LibGit2Sharp/Core/GitErrorCode.cs

@@ -1,8 +1,18 @@
-namespace LibGit2Sharp.Core
+namespace LibGit2Sharp
 {
-    internal enum GitErrorCode
+    /// <summary>
+    /// Git Error Code contains a list of possible error codes returned by LibGit2
+    /// </summary>
+    public enum GitErrorCode
     {
+        /// <summary>
+        /// No Error result OK
+        /// </summary>
         Ok = 0,
+
+        /// <summary>
+        /// General Error
+        /// </summary>
         Error = -1,
 
         /// <summary>