feat: '--gradle-sub-project' option to handle multip-project gradle

note this also appends the sub-project name to the root package name

help/help.txt

@@ -46,6 +46,9 @@ Options:
   --dry-run .......... Don't apply updates or patches during protect.
   --severity-threshold=<low|medium|high>
                        Only report vulnerabilities of provided level or higher.
+  --gradle-sub-project=<string>
+                       For Gradle "multi project" configurations,
+                       test a specific sub-project.
   -q, --quiet ........ Silence all output.
   -h, --help ......... This help information.
   -v, --version ...... The CLI version.

package.json

@@ -60,7 +60,7 @@
     "snyk-config": "2.2.0",
     "snyk-docker-plugin": "1.11.0",
     "snyk-go-plugin": "1.5.2",
-    "snyk-gradle-plugin": "2.0.1",
+    "snyk-gradle-plugin": "2.1.0",
     "snyk-module": "1.8.2",
     "snyk-mvn-plugin": "2.0.0",
     "snyk-nodejs-lockfile-parser": "1.5.1",