Follow GitHub templates for bug report and issue (#4205)

Based on points made in #4160, update GitHub issue templates to be more
versatile, do not include any inline comments and be straightforward,
while pointing out reporter in correct direction. Also, one of the
crucial things that previous template for bug report was missing was
RuneLite and Launcher versions and steps to reproduce the bug.

Supersedes #4160

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -1,37 +1,32 @@
 ---
-name: "\U0001F41BBug report"
-about: "If something isn't working as expected \U0001F914."
+name: "\U0001F41B Bug report"
+about: Create a report to help us improve
 
 ---
-Please check if your issue is not a duplicate by [searching existing issues](https://github.com/runelite/runelite/issues)
 
-| Question    | Answer
-| ------------| ---------------
-| Java Version | x.y.z
-| Operating System | e.g. Ubuntu/Windows/MacOS
+Please check if your issue is not a duplicate by [searching existing issues](https://github.com/runelite/runelite/search?type=Issues)
 
+**Describe the bug**
+A clear and concise description of what the bug is.
 
-<!--
-- Replace this comment with your issue description.
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
 
-- Please complete the above table with a correct information.
+**Expected behavior**
+A clear and concise description of what you expected to happen.
 
-- Please include steps to reproduce your issue.
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
 
-- For general support, please use our Discord server: https://discord.gg/mePCs8U
--->
+**Environment (please complete the following information):**
+ - OS: [e.g. Windows, Ubuntu, macOS]
+ - RuneLite version: [e.g 1.4.6]
+ - Launcher version: [e.g 1.5.2]
 
-<!--
-- Please past your full stack trace below, if applicable 
-
-- Your client logs can usually be found in:
-- Windows: C:\Users\<your_user_name>\.runelite\logs
-- Osx/Linux: ~/.runelite/logs
--->
-<details>
- <summary>stack trace</summary>
- 
- ```
-  %paste your stack trace here%
- ```
-</details>
+**Additional context**
+Add any other context about the problem here, e.g. logs. Your client logs can usually be found in
+`C:\Users\<your_user_name>\.runelite\logs` on Windows and `~/.runelite/logs` on Linux and macOS.