OboeTester: add app for testing Oboe

Big interactive app for testing Oboe, AAudio and OpenSL ES.
Has lots of options for reproducing bugs.

Has tests for Output, Input,
TapToTone Latency measurement,
Record and Playback audio.
diff --git a/apps/OboeTester/gradle.properties b/apps/OboeTester/gradle.properties
new file mode 100644
index 0000000..89e0d99
--- /dev/null
+++ b/apps/OboeTester/gradle.properties
@@ -0,0 +1,18 @@
+# Project-wide Gradle settings.
+
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+# Default value: -Xmx10248m -XX:MaxPermSize=256m
+# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true