build: set module=node16 in tsconfig.json #4546

Problem:
vscode shows warning:

    TS5110: Option 'module' must be set to 'Node16' when option
    'moduleResolution' is set to 'Node16'

Solution:
- Set `module=node16`.
- Update all tsconfig.json files to use the same "moduleResolution" and
  "module" settings.

Reference:
- https://www.typescriptlang.org/tsconfig#moduleResolution

packages/tsconfig.packages.json

@@ -5,7 +5,7 @@
             "@sinonjs/fake-timers": ["node_modules/@types/sinonjs__fake-timers"]
         },
         "incremental": true,
-        "module": "commonjs",
+        "module": "node16",
         "target": "es2021",
         "sourceMap": true,
         "moduleResolution": "node16",

plugins/eslint-plugin-aws-toolkits/tsconfig.json

@@ -2,12 +2,12 @@
     "compilerOptions": {
         "baseUrl": ".",
         "incremental": true,
-        "module": "commonjs",
+        "module": "node16",
         "target": "es2021",
         "outDir": "dist",
         "lib": ["dom", "es2021"],
         "sourceMap": true,
-        "moduleResolution": "node",
+        "moduleResolution": "node16",
         "resolveJsonModule": true,
         "strict": true,
         "noUnusedLocals": true,

tsconfig.json

@@ -2,9 +2,9 @@
 // If you are looking for the base config for subprojects, see packages/tsconfig.packages.json
 {
     "compilerOptions": {
-        "module": "commonjs",
+        "module": "node16",
         "target": "es2021",
-        "moduleResolution": "node",
+        "moduleResolution": "node16",
         "rootDir": ".",
         "resolveJsonModule": true,
         "strict": true,