Repo standardization (#851)

* Repo standardization

- Adding GH actions workflow

- Enforcing minimum Node version of 12

- Adding CODEOWNERS file

- Adding basic .gitattributes file

- Adding basic .editorconfig file

* Adding MM devs to CODEOWNERS file

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.gitattributes

@@ -0,0 +1,3 @@
+* text=auto
+
+yarn.lock linguist-generated=false

.github/CODEOWNERS

@@ -0,0 +1,4 @@
+# Lines starting with '#' are comments.
+# Each line is a file pattern followed by one or more owners.
+
+*                                    @xrn @MetaMask/devs

.github/workflows/test.yml

@@ -0,0 +1,29 @@
+name: Test
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        node-version: [12.x, 14.x, 16.x]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: yarn --frozen-lockfile
+    - run: yarn test
+  all-jobs-pass:
+    name: All jobs pass
+    runs-on: ubuntu-20.04
+    needs:
+      - test
+    steps:
+    - run: echo "Great success!"

.nvmrc

@@ -0,0 +1 @@
+v12

package.json

@@ -7,6 +7,9 @@
     "registry": "https://registry.npmjs.org/",
     "access": "public"
   },
+  "engines": {
+    "node": ">=12.0.0"
+  },
   "scripts": {
     "test": "node test"
   },