chore: add issue templates (#74)

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: 🐞 Bug Report
+description: Create a report to help us improve.
+labels: [bug]
+body:
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Welcome
+      options:
+        - label: Yes, I'm using the latest releases.
+          required: true
+        - label: Yes, I've searched similar issues on GitHub and didn't find any.
+          required: true
+        - label: Yes, I've included all information below (version, config, etc).
+          required: true
+
+  - type: dropdown
+    id: goos
+    attributes:
+      label: OS?
+      options:
+        - aix
+        - android
+        - darwin
+        - dragonfly
+        - freebsd
+        - illumos
+        - ios
+        - js
+        - linux
+        - netbsd
+        - openbsd
+        - plan9
+        - solaris
+        - wasip1
+        - windows
+    validations:
+      required: true
+
+  - type: dropdown
+    id: goarch
+    attributes:
+      label: Arch?
+      options:
+        - 'ppc64'
+        - '386'
+        - 'amd64'
+        - 'arm'
+        - 'arm64'
+        - 'riscv64'
+        - 'wasm'
+        - 'loong64'
+        - 'mips'
+        - 'mips64'
+        - 'mips64le'
+        - 'mipsle'
+        - 'ppc64le'
+        - s390x
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: What did you expect to see?
+      placeholder: Description.
+    validations:
+      required: true
+
+  - type: textarea
+    id: current
+    attributes:
+      label: What did you see instead?
+      placeholder: Description.
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Reproduction steps
+      description: "How do you trigger this bug? Please walk us through it step by step."
+      render: console
+      placeholder: |-
+        ```go
+        // Paste you code here.
+        ```
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: Version of flock
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs
+      render: console
+      value: |-
+        <details>
+
+        ```console
+        # paste output here
+        ```
+
+        </details>
+    validations:
+      required: true
+
+  - type: textarea
+    id: go-env
+    attributes:
+      label: Go environment (if applicable)
+      value: |-
+        <details>
+
+        ```console
+        $ go version && go env
+        # paste output here
+        ```
+
+        </details>
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: 💡 Feature request
+description: Suggest an idea for this project.
+body:
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Welcome
+      options:
+        - label: Yes, I've searched similar issues on GitHub and didn't find any.
+          required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Detailed Description
+      placeholder: Description.
+    validations:
+      required: true