chore: Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,23 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[Bug]"
+labels: ''
+assignees: ''
+
+---
+
+**Vue2-datepicker version**:
+**Vue version**:
+**Browser**:
+
+**Steps to reproduce**
+
+
+**Reproduction Link or Source Code**
+
+
+**Expected behavior**
+
+
+**Actual behavior**

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,13 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[Feature request]"
+labels: ''
+assignees: ''
+
+---
+
+**What problem does this feature solve?**
+
+
+**What does the proposed API look like?**