add git ignore file (opensearch-project#92)

ylwu-amzn · web-flow · commit b9aadd73960e · 2021-11-18T16:37:49.000-08:00
Signed-off-by: Yaliang Wu &lt;ylwu@amazon.com&gt;
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,7 @@
+.gradle/
+build/
+.idea/
+client/build/
+common/build/
+ml-algorithms/build/
+plugin/build/
