Add issue template [skip ci] (#1006)

This also contains revisions to the 'openhabian-DEBUG.md' document that
help to clarify debugging procedures which go with the new issue
template addition.

Fixes #1000

Signed-off-by: Ethan Dye <[email protected]>

.github/issue_template.md

@@ -0,0 +1,22 @@
+---
+name: openHABian issue template
+about: A template issue for the openHABian repository.
+labels: new
+---
+## Issue information:
+Please be as detailed as possible to help us help you. Also, please be sure to
+check that your issue has not already been observed and reported to the GitHub
+issue tracker (you should remove the `is:open` filter from the search
+bar to let you see closed issues). Please follow the guidelines outlined in the
+[openHAB community](https://community.openhab.org/t/how-to-ask-a-good-question-help-us-help-you/58396)
+on how to help us help you.
+
+## Debug information:
+Please provide all of the output provided by utilizing the `debugmode=maximum`
+parameter in the `/etc/openhabian.conf` file. For more information on how to
+accomplish this, please see [openhabian-DEBUG.md](https://github.com/openhab/openhabian/blob/master/docs/openhabian-DEBUG.md#create-a-debug-log).
+
+## System information:
+Please tell us what OS you are running (Raspberry Pi OS, Debian, Ubuntu), what
+HW you are running on (Raspberry Pi, amd64). Also include the output of
+`cat /etc/os-release` and `uname -m`.

CONTRIBUTING.md

@@ -150,8 +150,7 @@ Universally formatted code promotes ease of writing, reading, and maintenance.
     user input in unattended mode.
 
 *   Wrap Markdown code at 80 columns. Links and code examples may cross 80
-    columns when necessary. When editing documents in the `docs/` directory,
-    try to keep to one sentence per line.
+    columns when necessary.
 
 ### Usage of `apt-get update` command