Update issue templates

Added 'template' for security issue.

.github/ISSUE_TEMPLATE/-----security-issue.md

@@ -0,0 +1,12 @@
+---
+name: "\U0001F46E‍♂️Security issue"
+about: Please report security issues *only* via https://www.hackerone.com
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+For security reasons, please report all security issues via https://www.hackerone.com.  Also, if the issue is valid, a bug bounty will be paid out to you. 
+
+Please disclose responsibly and not via GitHub (which allows for exploiting issues in the wild before the patch is released).

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -2,6 +2,9 @@
 name: "\U0001F41E Bug report"
 about: Report a bug if something isn't working as expected in the core WooCommerce
   plugin.
+title: ''
+labels: ''
+assignees: ''
 
 ---
 

.github/ISSUE_TEMPLATE/Enhancement.md

@@ -1,6 +1,10 @@
 ---
 name: "✨ New Enhancement"
-about: "If you have an idea to improve an existing feature in core or need something for development (such as a new hook) please let us know or submit a Pull Request!"
+about: If you have an idea to improve an existing feature in core or need something
+  for development (such as a new hook) please let us know or submit a Pull Request!
+title: ''
+labels: ''
+assignees: ''
 
 ---
 

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -1,6 +1,10 @@
 ---
 name: "\U0001F680 Feature request"
-about: "Suggest a new feature \U0001F389 We'll consider building it if it receives sufficient interest! \U0001F44D"
+about: "Suggest a new feature \U0001F389 We'll consider building it if it receives
+  sufficient interest! \U0001F44D"
+title: ''
+labels: ''
+assignees: ''
 
 ---
 

.github/ISSUE_TEMPLATE/Support.md

@@ -2,6 +2,9 @@
 name: "❓ Support Question"
 about: "If you have a question \U0001F4AC please see our docs or use our forums, helpdesk,
   or Slack Community!"
+title: ''
+labels: ''
+assignees: ''
 
 ---