chore(language): Add Korean language

SoObjects/Mailer/SOGoMailKoreanForward.wo/SOGoMailKoreanForward.html

@@ -0,0 +1,15 @@
+<#newLine/><#newLine
+/><#signaturePlacementOnTop><#signature/><#newLine/><#newLine/></#signaturePlacementOnTop
+>-------- 원본 메시지 --------<#newLine
+/>제목: <#subject/><#newLine
+/>날짜: <#date/><#newLine
+/>보낸 사람: <#from/><#newLine
+/><#hasReplyTo>회신: <#replyTo/><#newLine/></#hasReplyTo>
+<#hasOrganization>조직: <#organization/><#newLine/></#hasOrganization>
+받는 사람: <#to/>
+<#hasCc>참조: <#cc/><#newLine/></#hasCc>
+<#hasNewsGroups>뉴스그룹: <#newsgroups/><#newLine/></#hasNewsGroups>
+<#hasReferences>참조: <#references/><#newLine/></#hasReferences>
+<#newLine/><#newLine
+/><#messageBody
+/><#signaturePlacementOnBottom><#newLine/><#newLine/><#signature/></#signaturePlacementOnBottom>