feat: add support for using custom .m2 directory (#3573)

The existing Java packaging process uses a localRepository which points to a newly created tmp directory. This means that when building, all dependencies need to be freshly downloaded which is contributing a significant portion of time to the packaging process.

This PR provides the option to the user (hidden) to use a non-transient .m2 local repository if they so choose. I have experienced a huge improvement to performance by enabling this setting (5s with enabled vs 4 minutes using defaults).

---

By submitting this pull request, I confirm that my contribution is made under the terms of the [Apache 2.0 license].

[Apache 2.0 license]: https://www.apache.org/licenses/LICENSE-2.0

Author: agdimech

.all-contributorsrc

@@ -1411,6 +1411,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "agdimech",
+      "name": "Adrian Dimech",
+      "avatar_url": "https://avatars.githubusercontent.com/u/51220968?v=4",
+      "profile": "https://github.com/agdimech",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "repoType": "github",