adding frontend build system with bucklescript and webpack

.gitignore

@@ -4,4 +4,8 @@
 build
 gradle
 out
-stale_outputs_checked
+stale_outputs_checked
+src/main/resources/public/dist
+src/main/js/**/*.js
+node_modules
+lib

bsconfig.json

@@ -0,0 +1,22 @@
+{
+  "name": "bs",
+  "version": "0.1.0",
+  "sources": {
+    "dir" : "src/main/js",
+    "subdirs" : true
+  },
+  "package-specs": {
+    "module": "commonjs",
+    "in-source": true
+  },
+  "suffix": ".bs.js",
+  "bs-dependencies": [
+  ],
+  "warnings": {
+    "error" : "+101"
+  },
+  "reason": {
+    "react-jsx": 3
+  },
+  "refmt": 3
+}

build.gradle

@@ -23,4 +23,10 @@ dependencies {
     testImplementation 'org.scalatest:scalatest_0.24:3.1.2'
 }
 
-mainClassName = 'org.bringo.server.Main'
+mainClassName = 'org.bringo.server.Main'
+
+task webpack(type: Exec) {
+    commandLine "npm", "run", "build"
+}
+
+compileScala.dependsOn webpack