fix(homeassistant): Ensure appended config files start on new line. (#8784)

**Description**
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⚒️ Fixes  # <!--(issue)-->

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [x] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code

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Used this as fix on my home-assistant chart.
Here's the initial problem:
```sh
$ cat recorder.txt
  recorder:
    purge_keep_days: 30
    commit_interval: 3
    db_url: xyz

$ cat config.yaml
  test: 123
  nest:
    x: 1
    y: 2

$ cat recorder.txt >> config.yaml
$ cat config.yaml
  test: 123
  nest:
    x: 1
    y: 2recorder:
    purge_keep_days: 30
    commit_interval: 3
    db_url: xyz
```

**📃 Notes:**
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**✔️ Checklist:**

- [x] ⚖️ My code follows the style guidelines of this project
- [x] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [ ] 📄 I have made corresponding changes to the documentation
- [x] ⚠️ My changes generate no new warnings
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [ ] ⬆️ I increased versions for any altered app according to semantic
versioning

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [ ] 🪞 I have opened a PR on
[truecharts/containers](https://github.com/truecharts/containers) adding
the container to TrueCharts mirror repo.
- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

---

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Signed-off-by: Daniel Riedl <107212962+danriedl@users.noreply.github.com>
Signed-off-by: Stavros Kois <47820033+stavros-k@users.noreply.github.com>
Co-authored-by: Stavros Kois <47820033+stavros-k@users.noreply.github.com>

charts/stable/home-assistant/Chart.yaml

@@ -23,7 +23,7 @@ sources:
   - https://github.com/home-assistant/home-assistant
   - https://github.com/cdr/code-server
 type: application
-version: 19.0.15
+version: 19.0.16
 annotations:
   truecharts.org/catagories: |
     - home-automation

charts/stable/home-assistant/values.yaml

@@ -59,11 +59,13 @@ configmap:
           if grep -q recorder: "$config_file"; then
             echo "configuration.yaml already contains recorder"
           else
+            echo "" >> "$config_file"
             cat /config/init/recorder.default >> "$config_file"
           fi
           if grep -q http: "$config_file"; then
             echo "configuration.yaml already contains http section"
           else
+            echo "" >> "$config_file"
             cat /config/init/http.default >> "$config_file"
           fi
         else