Add ExecutionOptionsManager

Taken from https://github.com/ucb-bar/firrtl

build.sbt

@@ -0,0 +1,16 @@
+// See LICENSE for license details.
+
+import Dependencies._
+
+lazy val commonSettings = Seq(
+  organization := "edu.berkeley.cs",
+  version := "0.1-SNAPSHOT",
+  scalaVersion := "2.11.8",
+  libraryDependencies ++= commonDependencies
+)
+
+lazy val executionoptions = (project in file("executionoptions"))
+  .settings(commonSettings)
+  .settings(
+    libraryDependencies ++= executionoptionsDependencies
+  )