Added Enterprise GH Type (#2194)

* feat(added GH Installation Type): (issue-2156)[#2156]

* feat(added GH Installation Type): (issue-2156)[#2156]

* fix spotless error

* spotless fixes

* spotless fixes

* Update GHTargetType.java

* spotless fixes

* spotless fixes

---------

Co-authored-by: rball11 <ravikumar.balla3@aexp.com>

Author: ravikumar2026

src/main/java/org/kohsuke/github/GHTargetType.java

@@ -13,6 +13,8 @@
  */
 public enum GHTargetType {
 
+    /** The enterprise. */
+    ENTERPRISE,
     /** The organization. */
     ORGANIZATION,
     /** The user. */

src/test/java/org/kohsuke/github/EnumTest.java

@@ -109,7 +109,7 @@ public void touchEnums() {
 
         assertThat(GHRepositorySelection.values().length, equalTo(2));
 
-        assertThat(GHTargetType.values().length, equalTo(2));
+        assertThat(GHTargetType.values().length, equalTo(3));
 
         assertThat(GHTeam.Role.values().length, equalTo(2));
         assertThat(GHTeam.Privacy.values().length, equalTo(3));