Update ESLint configuration (#162)

 * Update ESLint repository configuration

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[atomist-skill:atomist/eslint-skill]
    
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Author: atomist[bot]

.eslintrc.json

@@ -19,7 +19,7 @@
     "project": "tsconfig.json",
     "sourceType": "module"
   },
-  "plugins": ["@typescript-eslint", "simple-import-sort"],
+  "plugins": ["@typescript-eslint", "simple-import-sort", "deprecation"],
   "rules": {
     "@typescript-eslint/no-explicit-any": "off",
     "@typescript-eslint/no-floating-promises": ["error"],
@@ -36,6 +36,7 @@
     "simple-import-sort/imports": "error",
     "simple-import-sort/exports": "error",
     "sort-imports": "off",
-    "import/order": "off"
+    "import/order": "off",
+    "deprecation/deprecation": "warn"
   }
 }

package-lock.json

@@ -66,6 +66,7 @@
     "@typescript-eslint/parser": "^4.22.0",
     "eslint": "^7.24.0",
     "eslint-config-prettier": "^6.15.0",
+    "eslint-plugin-deprecation": "^1.2.0",
     "eslint-plugin-prettier": "^3.4.0",
     "eslint-plugin-simple-import-sort": "^7.0.0",
     "espower-typescript": "^9.0.2",