BREAKING(json): rename /common to /types

[kt3k]

Currently @std/json/common only exports JsonValue type. If some endpoint only exports utility types, it's usually called /types (ex. io/types, semver/types). This change aligned json to that practice.

What's changed

@std/json/common has been renamed to @std/json/types

Motivation

This change has been made to align the export path pattern to the rest of @std packages, such as:

• @std/semver/types
• @std/io/types

Migration

-import type { JsonValue } from "@std/json/common";
+import type { JsonValue } from "@std/json/types";

[kt3k]

This one seems the only open source usage of @std/json/common. I'll send a PR to that repo after this landed
https://github.com/dahlia/deno-task-hooks/blob/f2c6bc288f2654847b06dfe9cf44f3da84f3e3d2/install.ts