feat(npm-scripts): add build step for compiling sass

Author: bryceosterhaus

package.json

@@ -6,6 +6,7 @@
 	"description": "Liferay's Frontend Infrastructure Team monorepo",
 	"devDependencies": {
 		"@babel/preset-env": "^7.4.2",
+		"@clayui/css": "^3.x",
 		"@cnakazawa/watch": "^1.0.4",
 		"@types/ejs": "3.0.4",
 		"@types/escodegen": "0.0.6",

projects/npm-tools/packages/npm-scripts/__fixtures__/sass/append-timestamp/main.scss

@@ -0,0 +1,5 @@
+@import url('import.css');
+
+@import url('import2.css');
+
+@import url('import3.css');

projects/npm-tools/packages/npm-scripts/__fixtures__/sass/excludes/excluded.scss

@@ -0,0 +1 @@
+$primary-color: red;

projects/npm-tools/packages/npm-scripts/__fixtures__/sass/excludes/included.scss

@@ -0,0 +1,5 @@
+@import 'fake-atlas';
+
+.my-class {
+	color: $primary-color;
+}

projects/npm-tools/packages/npm-scripts/__fixtures__/sass/imports/fake-atlas.scss

@@ -0,0 +1,5 @@
+.parent-class {
+	.child-class {
+		color: red;
+	}
+}

projects/npm-tools/packages/npm-scripts/__fixtures__/sass/imports/imports.scss

@@ -0,0 +1,5 @@
+.nested-parent-class {
+	.nested-child-class {
+		color: blue;
+	}
+}

projects/npm-tools/packages/npm-scripts/__fixtures__/sass/main/main.scss

@@ -0,0 +1,5 @@
+.parent-class {
+	.child-class {
+		color: red;
+	}
+}