chore: bootstrap CI + release + templates for Epson Printer

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: 报告集成 bug
+title: "[Bug] "
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: 问题描述
+      placeholder: 简明描述 bug
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: 相关日志
+      placeholder: Home Assistant 日志里 integration 相关的 traceback
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: 复现步骤
+      placeholder: 1. ...
+2. ...
+3. ...
+  - type: input
+    id: version
+    attributes:
+      label: 版本
+      placeholder: manifest.json 里的 version
+    validations:
+      required: true

.github/workflows/hacs-validate.yml

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+name: HACS
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Validate HACS
+        uses: hacs/action@main
+        with:
+          category: integration

.github/workflows/hassfest.yaml

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+name: Validate with hassfest
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: home-assistant/actions/hassfest@master

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Extract changelog
+        shell: pwsh
+        run: |
+          $tag = "${{ github.ref_name }}" -replace '^v', ''
+          $file = "CHANGELOG.md"
+          if (!(Test-Path $file)) {
+            "no changelog" | Set-Content release_body.txt
+            exit 0
+          }
+          $in = $false; $body = @()
+          foreach ($line in Get-Content $file) {
+            if ($line -match "^## \[$tag\]") { $in = $true; continue }
+            if ($in -and $line -match "^## \[") { break }
+            if ($in) { $body += $line }
+          }
+          ($body -join "`n").Trim() | Set-Content release_body.txt
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        with:
+          body_path: release_body.txt
+          generate_release_notes: true