Add labels to issue templates

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,7 +2,7 @@
 name: Bug report
 about: Create a report to help us improve
 title: ''
-labels: ''
+labels: bug
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/feature_request.md

@@ -2,7 +2,7 @@
 name: Feature request
 about: Suggest an idea for this project
 title: ''
-labels: ''
+labels: suggestion
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/i-need-help.md

@@ -2,7 +2,7 @@
 name: I need help
 about: Get support from our community
 title: ''
-labels: ''
+labels: question
 assignees: ''
 
 ---