adding reflections as a dependency (#1561)

Signed-off-by: Dhrubo Saha <dhrubo@amazon.com>

Author: dhrubo-os

ppl/build.gradle

@@ -44,6 +44,8 @@ configurations {
 dependencies {
     antlr "org.antlr:antlr4:4.7.1"
 
+    runtimeOnly group: 'org.reflections', name: 'reflections', version: '0.9.12'
+
     implementation "org.antlr:antlr4-runtime:4.7.1"
     implementation group: 'com.google.guava', name: 'guava', version: '31.0.1-jre'
     api group: 'org.json', name: 'json', version: '20180813'