Use multiple GitHub issue templates for bugs, feature requests and support questions (#986)

* add more details

* Use multiple issue templates for bugs, features requests and support questions.

Author: bergmeister

.github/ISSUE_TEMPLATE.md

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+---
+name: Bug report 🐛
+about: Report errors or unexpected behavior 🤔
+
+---
+
+Before submitting a bug report:
+
+- Make sure you are able to repro it on the latest released version
+- Perform a quick search for existing issues to check if this bug has already been reported
+
+Steps to reproduce
+------------------
+
+```PowerShell
+
+```
+
+Expected behavior
+-----------------
+
+```none
+
+```
+
+Actual behavior
+---------------
+
+```none
+
+```
+
+If an unexpected error was thrown then please report the full error details using e.g. `$error[0] | Select-Object *`
+
+Environment data
+----------------
+
+<!-- Provide the output of the following 2 commands -->
+
+```PowerShell
+> $PSVersionTable
+
+> (Get-Module -ListAvailable PSScriptAnalyzer).Version | ForEach-Object { $_.ToString() }
+
+```

.github/ISSUE_TEMPLATE/Bug_report.md

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+---
+name: Feature request/idea 🚀
+about: Suggest a new feature or improvement (this does not mean you have to implement it)
+
+---
+
+**Summary of the new feature**
+
+A clear and concise description of what the problem is that the new feature would solve.
+Try formulating it in user story style (if applicable):
+'As a user I want X so that Y.' with X being the being the action and Y being the value of the action.
+
+**Proposed technical implementation details (optional)**
+
+A clear and concise description of what you want to happen.
+
+**What is the latest version of PSScriptAnalyzer at the point of writing**
+

.github/ISSUE_TEMPLATE/Feature_request.md

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+---
+name: Support Question ❓
+about: If you have a question, you can try asking in the scriptanalyzer channel of the international PowerShell Slack channel first.
+
+---
+
+* Slack Community Chat: https://powershell.slack.com (you can sign-up at http://slack.poshcode.org/ for an invite)
+* Also have a look at the `RoleDocumentation` folder for more information on each rule:
+https://github.com/PowerShell/PSScriptAnalyzer/tree/development/RuleDocumentation