chore: add issue forms

.github/ISSUE_TEMPLATE/bug-report.en-US.yml

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+name: "🐞 Bug Report"
+description: Create a bug report for Vue-ECharts
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for taking the time to report this issue!
+  - type: checkboxes
+    id: confirmation
+    attributes:
+      description: Before submitting the issue, please make sure you did the following check.
+      options:
+        - label: I can confirm this problem is not reproducible with ECharts itself.
+          required: true
+  - type: dropdown
+    id: integration
+    attributes:
+      label: How are you introducing Vue-ECharts into your project?
+      options:
+        - label: ES Module imports
+        - label: "<script> tag"
+    validations:
+      required: true
+  - type: textarea
+    id: versions
+    attributes:
+      label: Versions
+      description: The output of `npm ls vue echarts vue-echarts`.
+      render: sh
+    validations:
+      required: true
+  - type: textarea
+    id: details
+    attributes:
+      label: Details
+      description: A clear description about the bug.
+    validations:
+      required: true
+  - type: input
+    id: repro
+    attributes:
+      label: Reproduction
+      description: "A link to a boiled-down reproduction (a minimal but runnable demo with unnecessary dependencies pruned). Please paste the link to your CodeSandbox demo below: ([Vue 3 template](https://codesandbox.io/s/charming-night-2y6m6?file=/src/App.vue) / [Vue 2 template](https://codesandbox.io/s/suspicious-glitter-mk66j?file=/src/App.vue))"
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/bug-report.zh-Hans.yml

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+name: "🐞 Bug 报告"
+description: 给 Vue-ECharts 报告 bug
+body:
+  - type: markdown
+    attributes:
+      value: |
+        感谢您花时间报告这个问题！
+  - type: checkboxes
+    id: confirmation
+    attributes:
+      description: 在提交此问题前，请确认下述情况。
+      options:
+        - label: 我可以确认这个问题无法在 ECharts 项目本身中复现。
+          required: true
+  - type: dropdown
+    id: integration
+    attributes:
+      label: 您是如何将 Vue-ECharts 引入项目的？
+      options:
+        - label: 通过 ES 模块 import
+        - label: "<script> 标签"
+    validations:
+      required: true
+  - type: textarea
+    id: versions
+    attributes:
+      label: 版本信息
+      description: 在命令行执行 `npm ls vue echarts vue-echarts` 的输出。
+      render: sh
+    validations:
+      required: true
+  - type: textarea
+    id: details
+    attributes:
+      label: 问题详情
+      description: 请清晰地描述您遇到的问题。
+    validations:
+      required: true
+  - type: input
+    id: repro
+    attributes:
+      label: 问题复现
+      description: "请提供一个精炼的问题复现（去除无关依赖的最小化可运行 demo）。 Plea请在下方贴入在 CodeSandbox 上 demo 的链接：（[Vue 3 模板](https://codesandbox.io/s/charming-night-2y6m6?file=/src/App.vue) / [Vue 2 模板](https://codesandbox.io/s/suspicious-glitter-mk66j?file=/src/App.vue)）"
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature-request.en-US.yml

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+name: "✨ Feature Request"
+description: Create a feature request for Vue-ECharts
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for taking the time to report this issue!
+  - type: checkboxes
+    id: confirmation
+    attributes:
+      label: Confirmation
+      description: Before submitting the issue, please make sure you did the following check.
+      options:
+        - label: I can confirm this is a feature request for the Vue component instead of ECharts itself.
+          required: true
+  - type: textarea
+    id: desc
+    attributes:
+      label: Details
+      description: A clear description about the use case of the new feature and its potential API.
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature-request.zh-Hans.yml

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+name: "✨ 新功能建议"
+description: 给 Vue-ECharts 提交新功能建议
+body:
+  - type: markdown
+    attributes:
+      value: |
+        感谢您花时间报告这个问题！
+  - type: checkboxes
+    id: confirmation
+    attributes:
+      label: 提前确认
+      description: 在提交此建议前，请确认下述情况。
+      options:
+        - label: 我可以确认这个新功能建议是提交给此 Vue 组件的，而不应该提交到 ECharts 项目本身。
+          required: true
+  - type: textarea
+    id: details
+    attributes:
+      label: 新功能详情
+      description: 请清晰地描述此功能的适用场景，以及可能的相关 API 的设想。
+    validations:
+      required: true