feat(TeslaMate): adding grafana annotation for adding a directory to TeslaMate dashboard (#23674)

Adds annotation for grafana folder
**⚙️ Type of change**

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

**🧪 How Has This Been Tested?**
This is the annotation to create a directory for grafana. Since we can't
use templates for dashboards we may as well add another hard coded value
here.

Using helm template and installing the chart manually.


**✔️ Checklist:**

- [x] ⚖️ My code follows the style guidelines of this project
- [x] 👀 I have performed a self-review of my own code
- [x] #️⃣ 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
- [x] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [x] ⬆️ I increased versions for any altered app according to semantic
versioning
- [x] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):` or `chore(chart-name):`

charts/incubator/teslamate/Chart.yaml

@@ -36,4 +36,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/incubator/teslamate
   - https://hub.docker.com/r/teslamate/teslamate
 type: application
-version: 2.1.2
+version: 2.1.3

charts/incubator/teslamate/templates/_configmap.tpl

@@ -19,6 +19,7 @@
   enabled: true
   annotations:
     k8s-sidecar-target-directory: "TeslaMate"
+    grafana_folder: "TeslaMate"
   labels:
       grafana_dashboard: "1"
   data: