build: move gitatrtributes files to node templates, rename __toc to toc (#564)

* build: rename _toc to toc

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Tue Jul 21 10:53:20 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 99c93fe09f8c1dca09dfc0301c8668e3a70dd796
Source-Link: googleapis/synthtool@99c93fe

* build: move gitattributes files to node templates

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Thu Jul 23 01:45:04 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 3a00b7fea8c4c83eaff8eb207f530a2e3e8e1de3
Source-Link: googleapis/synthtool@3a00b7f

Author: yoshi-automation

packages/google-cloud-translate/.gitattributes

@@ -1,3 +1,4 @@
 *.ts text eol=lf
 *.js text eol=lf
 protos/* linguist-generated
+**/api-extractor.json  linguist-language=JSON-with-Comments

packages/google-cloud-translate/synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-translate.git",
-        "sha": "65c3389267d449d34e8a70abd3a50616a564443f"
+        "sha": "0a7543eb0e33d2b17236e16ea2a909f3adf64cbe"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "21f1470ecd01424dc91c70f1a7c798e4e87d1eec"
+        "sha": "3a00b7fea8c4c83eaff8eb207f530a2e3e8e1de3"
       }
     }
   ],