Enable '@typescript-eslint/recommended-requiring-type-checking'

We selectively fixed and enabled most of its warnings, and then disabled
the ones we cannot (for now) fix (mostly due to use of `any`).

Author: andyleejordan

.eslintrc.json

@@ -5,7 +5,8 @@
   },
   "extends": [
     "eslint:recommended",
-    "plugin:@typescript-eslint/recommended"
+    "plugin:@typescript-eslint/recommended",
+    "plugin:@typescript-eslint/recommended-requiring-type-checking"
   ],
   "overrides": [],
   "parser": "@typescript-eslint/parser",
@@ -43,23 +44,23 @@
         "argsIgnorePattern": "^_"
       }
     ],
-    "@typescript-eslint/require-await": [
-      "error"
+    "@typescript-eslint/no-unsafe-argument": [
+      "off"
     ],
-    "@typescript-eslint/no-misused-promises": [
-      "error"
+    "@typescript-eslint/no-unsafe-assignment": [
+      "off"
     ],
-    "@typescript-eslint/no-floating-promises": [
-      "error"
+    "@typescript-eslint/no-unsafe-call": [
+      "off"
     ],
-    "@typescript-eslint/await-thenable": [
-      "error"
+    "@typescript-eslint/no-unsafe-member-access": [
+      "off"
     ],
-    "@typescript-eslint/unbound-method": [
-      "error"
+    "@typescript-eslint/no-unsafe-return": [
+      "off"
     ],
-    "@typescript-eslint/restrict-plus-operands": [
-      "error"
+    "@typescript-eslint/restrict-template-expressions": [
+      "off"
     ],
     "header/header": [
       2,