Move ESM bundles to a /esm directory

Author: dlarocque

packages/functions-compat/package.json

@@ -4,22 +4,22 @@
   "description": "",
   "author": "Firebase <[email protected]> (https://firebase.google.com/)",
   "main": "dist/index.cjs.js",
-  "browser": "dist/index.esm2017.js",
-  "module": "dist/index.esm2017.js",
+  "browser": "dist/esm/index.esm2017.js",
+  "module": "dist/esm/index.esm2017.js",
   "esm5": "dist/index.esm5.js",
   "exports": {
     ".": {
       "types": "./dist/src/index.d.ts",
       "node": {
         "require": "./dist/index.cjs.js",
-        "import": "./dist/index.esm2017.js"
+        "import": "./dist/esm/index.esm2017.js"
       },
       "esm5": "./dist/index.esm5.js",
       "browser": {
         "require": "./dist/index.cjs.js",
-        "import": "./dist/index.esm2017.js"
+        "import": "./dist/esm/index.esm2017.js"
       },
-      "default": "./dist/index.esm2017.js"
+      "default": "./dist/esm/index.esm2017.js"
     },
     "./package.json": "./package.json"
   },

packages/functions/package.json

@@ -4,22 +4,22 @@
   "description": "",
   "author": "Firebase <[email protected]> (https://firebase.google.com/)",
   "main": "dist/index.cjs.js",
-  "browser": "dist/index.esm2017.js",
-  "module": "dist/index.esm2017.js",
+  "browser": "dist/esm/index.esm2017.js",
+  "module": "dist/esm/index.esm2017.js",
   "esm5": "dist/index.esm.js",
   "exports": {
     ".": {
       "types": "./dist/functions-public.d.ts",
       "node": {
-        "import": "./dist/index.esm2017.js",
+        "import": "./dist/esm/index.esm2017.js",
         "require": "./dist/index.cjs.js" 
       },
       "esm5": "./dist/index.esm.js",
       "browser": {
         "require": "./dist/index.cjs.js",
-        "import": "./dist/index.esm2017.js"
+        "import": "./dist/esm/index.esm2017.js"
       },
-      "default": "./dist/index.esm2017.js"
+      "default": "./dist/esm/index.esm2017.js"
     },
     "./package.json": "./package.json"
   },