Add issue and PR templates for gitee and github

.gitee/PULL_REQUEST_TEMPLATE.md

+<!--  Thanks for sending a pull request!  Here are some tips for you:
+
+If this is your first time, please read our contributor guidelines: https://gitee.com/mindspore/mindspore/blob/master/CONTRIBUTING.md
+-->
+
+**What type of PR is this?**
+> Uncomment only one ` /kind <>` line, hit enter to put that in a new line, and remove leading whitespaces from that line:
+>
+> /kind bug
+> /kind task
+> /kind feature
+
+
+**What does this PR do / why do we need it**:
+
+
+**Which issue(s) this PR fixes**:
+<!-- 
+*Automatically closes linked issue when PR is merged.
+Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
+-->
+Fixes #
+
+**Special notes for your reviewers**:
+
+

.github/ISSUE_TEMPLATE/RFC.md

+---
+name: RFC
+about: Use this template for the new feature or enhancement
+labels: kind/feature or kind/enhancement
+
+---
+
+## Background
+- Describe the status of the problem you wish to solve
+- Attach the relevant issue if have
+
+## Introduction
+- Describe the general solution, design and/or pseudo-code
+
+## Trail
+| No. | Task Description | Related Issue(URL) |
+| --- | ---------------- | ------------------ |
+| 1   |                  |                    |
+| 2   |                  |                    |

.github/ISSUE_TEMPLATE/bug-report.md

+---
+name: Bug Report
+about: Use this template for reporting a bug
+labels: kind/bug
+
+---
+
+<!--  Thanks for sending an issue!  Here are some tips for you:
+
+If this is your first time, please read our contributor guidelines: https://github.com/mindspore-ai/mindspore/blob/master/CONTRIBUTING.md
+-->
+
+## Environment
+### Hardware Environment(`Ascend`/`GPU`/`CPU`): 
+> Uncomment only one ` /device <>` line, hit enter to put that in a new line, and remove leading whitespaces from that line:
+>
+> `/device ascend`</br>
+> `/device gpu`</br>
+> `/device cpu`</br>
+
+### Software Environment:
+- **MindSpore version (source or binary)**:
+- **Python version (e.g., Python 3.7.5)**:
+- **OS platform and distribution (e.g., Linux Ubuntu 16.04)**:
+- **GCC/Compiler version (if compiled from source)**: 
+
+## Describe the current behavior
+
+
+## Describe the expected behavior
+
+
+## Steps to reproduce the issue
+1. 
+2. 
+3.
+
+## Related log / screenshot
+
+
+## Special notes for this issue
+
+

.github/ISSUE_TEMPLATE/task-tracking.md

+---
+name: Task
+about: Use this template for task tracking
+labels: kind/task
+
+---
+
+## Task Description
+
+
+## Task Goal
+
+
+## Sub Task
+| No. | Task Description | Issue ID |
+| --- | ---------------- | -------- |
+| 1   |                  |          |
+| 2   |                  |          |
+

.github/PULL_REQUEST_TEMPLATE.md

+<!--  Thanks for sending a pull request!  Here are some tips for you:
+
+If this is your first time, please read our contributor guidelines: https://github.com/mindspore-ai/mindspore/blob/master/CONTRIBUTING.md
+-->
+
+**What type of PR is this?**
+> Uncomment only one ` /kind <>` line, hit enter to put that in a new line, and remove leading whitespaces from that line:
+>
+> `/kind bug`</br>
+> `/kind task`</br>
+> `/kind feature`</br>
+
+**What does this PR do / why do we need it**:
+
+
+**Which issue(s) this PR fixes**:
+<!-- 
+*Automatically closes linked issue when PR is merged.
+Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
+-->
+Fixes #
+
+**Special notes for your reviewers**:
+