fix(bug-report-template): improve bug reporting and addressing reviewer comments

Author: psthindal

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,50 @@
+---
+
+name: Bug report
+description: Create a report to help us improve pip-tools.
+
+body:
+  - type: textarea
+    id: bug-description
+    attributes:
+      label: Describe the Bug
+      description: >-
+          A clear and concise description of what the bug is.
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected-behaviour
+    attributes:
+      label: Expected Behaviour
+      description: >-
+          A description of what were you expecting to happen.
+    validations:
+          required: true
+
+  - type: textarea
+    id: reproduction-steps
+    attributes:
+      label: Steps to Reproduce
+      description: >-
+          Describe the steps to reproduce the bug. 
+      placeholder: |
+          1. ...
+          2. ...
+          3. ...
+    validations:
+      required: false
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment Versions
+      description: >-
+          Describe the environment versions used.
+      placeholder: |
+          1. OS Type
+          2. Python version: `$ python -V`
+          3. pip version: `$ pip --version`
+          4. pip-tools version: `$ pip-compile --version`
+    validations:
+      required: false