Add CODEOWNERS and a bug template

Signed-off-by: Taylor Smock <taylor.smock@kaart.com>

.gitlab/CODEOWNERS

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+* @smocktaylor

.gitlab/issue_templates/bug.md

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+Summary
+
+(Summarize the bug encountered concisely)
+
+
+Steps to reproduce
+
+(How one can reproduce the issue - this is very important)
+
+
+What is the current bug behavior?
+
+(What actually happens)
+
+
+What is the expected correct behavior?
+
+(What you should see instead)
+
+JOSM Status Report
+```
+(Replace this with the JOSM Status Report (Help -> Show Status Report))
+```
+
+Relevant logs and/or screenshots
+
+(Paste any relevant logs - please use code blocks (```) to format console output,
+logs, and code as it's very hard to read otherwise.)
+
+
+Possible fixes
+
+(If you can, link to the line of code that might be responsible for the problem)
+
+/label ~bug ~needs-investigation
+/cc @smocktaylor
+/assign @smocktaylor
+/due in 1 week
+/todo
+