[CORL-678] Transition to eslint (#2634)

* chore: setup eslint

* chore: tslint checks with types & check for import order

* chore: complete eslint transition

* fix: tests

* fix: linting after rebase, faster lint for lint-staged

* chore: remove line

* fix: lint rules

* feat: add a11y linter and fix errors

* fix: tests

scripts/generateSchemaTypes.js

@@ -1,4 +1,3 @@
-const { Linter, Configuration } = require("tslint");
 const { generateTSTypesAsString } = require("graphql-schema-typescript");
 const { getGraphQLConfig } = require("graphql-config");
 const path = require("path");
@@ -69,12 +68,12 @@ if (require.main === module) {
   main()
     .then(files => {
       for (const { fileName } of files) {
-        // tslint:disable-next-line:no-console
+        // eslint-disable-next-line no-console
         console.log(`Generated ${fileName}`);
       }
     })
     .catch(err => {
-      // tslint:disable-next-line:no-console
+      // eslint-disable-next-line no-console
       console.error(err);
     });
 }