updated issue and pullrequest templates (#5082)

* added new issue and pull request templates

* added label

* text changes

.github/ISSUE_TEMPLATE/1_Bug_report.md

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+---
+name: 🐛 Bug Report
+about: Report errors and problems
+labels: Bug
+
+---
+
+**Bootstraptable version(s) affected**:
+<!-- The version you currently use/tested -->
+
+**Description**  
+<!-- What kind of error/problem you are affected by -->
+
+**Example**  
+<!-- Please use our online Editor (https://live.bootstrap-table.com/) to create a example.
+     On our Wiki (https://github.com/wenzhixin/bootstrap-table/wiki/Online-Editor-Explanation) you can read how to use the editor.-->
+
+**Possible  (optional)**  
+<!--- If you have suggestions on a fix/reason for the bug, please describe it here -->
+
+**Additional context**  
+<!-- Optional: any other context about the problem: browser version, operation system,  etc. -->
+
+
+<!-- Love bootstrap-table? Please consider supporting our collective:
+👉  https://opencollective.com/bootstrap-table/donate -->

.github/ISSUE_TEMPLATE/2_Feature_request.md

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+---
+name: 🚀 Feature Request/Improvement
+about: Ideas for new features and improvements
+labels: feature-request
+---
+
+**Description**  
+<!-- Description of the desired new feature. -->
+
+
+<!-- Love bootstrap-table? Please consider supporting our collective:
+👉  https://opencollective.com/bootstrap-table/donate -->

.github/ISSUE_TEMPLATE/3_Support_question.md

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+---
+name: ❓ Support Question
+about: Here you can ask questions about the features
+labels: help-wanted
+
+---
+<!-- Before you ask please check if you can find a similar issue and/or a solution on a issue or on stackoverflow -->
+
+**Description**  
+<!-- Description of your support question. -->
+
+**Example (optional)**  
+<!-- Please use our online Editor (https://live.bootstrap-table.com/) to create a example (what you already tried).
+     On our Wiki (https://github.com/wenzhixin/bootstrap-table/wiki/Online-Editor-Explanation) you can read how to use the editor.-->
+
+
+<!-- Love bootstrap-table? Please consider supporting our collective:
+👉  https://opencollective.com/bootstrap-table/donate -->

.github/ISSUE_TEMPLATE/4_Documentation.md

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+---
+name: ⛔ Documentation & Examples
+about: Issues with the Documentation and/or the Examples
+labels: docs
+
+---
+
+<!-- 
+We have our own dedicated repository for the examples. Please open your
+documentation-related issue at https://github.com/wenzhixin/bootstrap-table-examples
+-->
+
+
+**Description**  
+<!-- Description of issue with the documentation. -->
+
+
+<!-- Love bootstrap-table? Please consider supporting our collective:
+👉  https://opencollective.com/bootstrap-table/donate -->

.github/PULL_REQUEST_TEMPLATE.md

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+**Bug fix?**
+<!-- yes/no -->
+
+**New Feature?**
+<!-- yes/no -->
+
+**Resolve an issue?**
+<!-- Please prefix each issue number with  "Fix #"  (e.g. Fix #200)  -->
+
+**Example(s)?**
+<!-- Please use our online Editor (https://live.bootstrap-table.com/) to create example(s) (Before and after your changes).
+     On our Wiki (https://github.com/wenzhixin/bootstrap-table/wiki/Online-Editor-Explanation) you can read how to use the editor.-->
+     
+
+<!-- Love bootstrap-table? Please consider supporting our collective:
+👉  https://opencollective.com/bootstrap-table/donate -->