Apply the "app: custom objects" label to all new issues

.github/ISSUE_TEMPLATE/01-feature_request.yaml

@@ -1,7 +1,7 @@
 ---
 name: ✨ Feature Request
 description: Propose a new feature or enhancement
-labels: ["type: feature", "status: needs triage"]
+labels: ["app: custom objects", "type: feature", "status: needs triage"]
 body:
   - type: input
     attributes:

.github/ISSUE_TEMPLATE/02-bug_report.yaml

@@ -1,7 +1,7 @@
 ---
 name: 🐛 Bug Report
 description: Report a reproducible bug in the current stable release
-labels: ["type: bug", "status: needs triage"]
+labels: ["app: custom objects", "type: bug", "status: needs triage"]
 body:
   - type: input
     attributes:

.github/ISSUE_TEMPLATE/03-documentation_change.yaml

@@ -1,7 +1,7 @@
 ---
 name: 📖 Documentation Change
 description: Suggest an addition or modification to the plugin's documentation
-labels: ["type: documentation", "status: needs triage"]
+labels: ["app: custom objects", "type: documentation", "status: needs triage"]
 body:
   - type: dropdown
     attributes:

.github/ISSUE_TEMPLATE/04-housekeeping.yaml

@@ -1,7 +1,7 @@
 ---
 name: 🏡 Housekeeping
 description: An internal change pertaining to the codebase itself
-labels: ["type: housekeeping"]
+labels: ["app: custom objects", "type: housekeeping"]
 body:
   - type: textarea
     attributes: