Use issue types and forms (#1579)

.github/ISSUE_TEMPLATE/bug-report.yml

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+name: Bug Report
+description: File a bug report
+title: "[Bug]: "
+labels: ["type:bug", "needs:info"]
+projects: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this bug report!
+
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      description: Include in detailed steps how to reproduce the bug you encountered
+      placeholder: Tell us what you see!
+    validations:
+      required: true
+
+  - type: textarea
+    id: what-expected
+    attributes:
+      label: What did you expect to happen?
+      description: Include details
+      placeholder: Tell us what you see!
+    validations:
+      required: true
+
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the bug you encountered.
+      options:
+      - label: I have searched the existing issues
+        required: true

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: AMO Matrix channel
+    url: https://matrix.to/#/#amo:mozilla.org
+    about: Please ask and answer questions here.

.github/ISSUE_TEMPLATE/task-addons-frontend.yml

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+name: Task (addons-frontend)
+description: Filing a task (contributors only)
+title: "[Task]: "
+labels: ["type:feature", "needs:info", "repository:addons-frontend"]
+projects: []
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: |
+        A few sentences describing what the task aims to achieve. It can be a simple sentence or a story formatted paragraph.
+        Be concise and detailed. Avoid vague terms and include relevant links.
+      placeholder: |
+        As a <blank>, I want to <blank, so that I can <blank>
+    validations:
+      required: true
+  - type: textarea
+    id: acceptance
+    attributes:
+      label: Acceptance Criteria
+      description: List of milestones or checkpoints that if met verify the task has been completed.
+      value: |
+        ```[tasklist]
+          ### Acceptance Criteria
+          - [ ] 
+          ```
+    validations:
+      required: true
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Checks
+      description: Checks before submitting the issue
+      options:
+        -
+          label: If the issue is ready to work on, I have removed the "needs:info" label and added an assignee.
+          required: true

.github/ISSUE_TEMPLATE/task-addons-server.yml

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+name: Task (addons-server)
+description: Filing a task (contributors only)
+title: "[Task]: "
+labels: ["type:feature", "needs:info", "repository:addons-server"]
+projects: []
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: |
+        A few sentences describing what the task aims to achieve. It can be a simple sentence or a story formatted paragraph.
+        Be concise and detailed. Avoid vague terms and include relevant links.
+      placeholder: |
+        As a <blank>, I want to <blank, so that I can <blank>
+    validations:
+      required: true
+  - type: textarea
+    id: acceptance
+    attributes:
+      label: Acceptance Criteria
+      description: List of milestones or checkpoints that if met verify the task has been completed.
+      value: |
+        ```[tasklist]
+          ### Acceptance Criteria
+          - [ ] 
+          ```
+    validations:
+      required: true
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Checks
+      description: Checks before submitting the issue
+      options:
+        -
+          label: If the issue is ready to work on, I have removed the "needs:info" label and added an assignee.
+          required: true