[CHORE] Add Overture issue template and field sync workflow

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/overture.yaml

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+name: Overture
+description: General issue for work tracked in the Overture project.
+projects: ["OvertureMaps/84"]
+body:
+  - type: dropdown
+    id: type
+    attributes:
+      label: Type
+      description: What kind of work is this? Used to populate the organization-level `Type` field during triage.
+      options:
+        - Task
+        - Bug
+        - Agenda
+    validations:
+      required: true
+  - type: dropdown
+    id: scope
+    attributes:
+      label: Scope
+      description: Primary theme or platform impacted. Used to populate the organization-level `Scope` field during triage.
+      options:
+        - Addresses
+        - Base
+        - Buildings
+        - Divisions
+        - Places
+        - Transportation
+        - Multi-theme or Platform
+    validations:
+      required: true
+  - type: dropdown
+    id: skillset
+    attributes:
+      label: Skillset
+      description: Primary skill needed to complete this task. Used to populate the organization-level `Skillset` field during triage.
+      options:
+        - data analysis
+        - data science
+        - dev ops
+        - engineering
+    validations:
+      required: true
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      placeholder: Describe what this issue is trying to accomplish (what), context (why), constraints, acceptance criteria, design details (how), and testing
+    validations:
+      required: true

.github/workflows/sync-issue-type-and-scope.yml

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+---
+name: Sync issue Type and Scope
+
+on:
+  issues:
+    types: [opened]
+
+# One sync run per issue at a time; drop duplicate triggers.
+concurrency:
+  group: sync-issue-type-scope-${{ github.event.issue.number }}
+  cancel-in-progress: true
+
+permissions: {}
+
+jobs:
+  sync-fields:
+    name: Sync Fields
+    runs-on: ubuntu-slim
+    permissions:
+      issues: write # for the sync action to set org-level Type, Scope, and Skillset
+    steps:
+      - name: Sync Type and Scope from form answers
+        uses: OvertureMaps/workflows/.github/actions/sync-issue-fields@main # zizmor: ignore[unpinned-uses] intentionally track main
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}