Change PR template headers to H2. Add vscode and temp files to gitign…

…ore (getsolus#347)

### Summary

Headers in the PR template were H3, changed to H2. Added vscode and temp
files to gitignore.

### Test Plan

Viewed tempalte file in preview mode

### Checklist

- [ ] Package was built and tested against unstable n/a not a package
update

Co-authored-by: Tracey Clark <tracey.dev@tlcnet.info>

.github/pull_request_template.md

@@ -1,11 +1,11 @@
-### Summary
+## Summary
 
 <!-- Info on what this pull request updates/changes/etc -->
 
-### Test Plan
+## Test Plan
 
-<!-- Short description on how the package was tested -->
+<!-- Short description of how the package was tested -->
 
-### Checklist
+## Checklist
 
 - [ ] Package was built and tested against unstable

.gitignore

@@ -1 +1,3 @@
 *.eopkg
+*~
+*.vscode