Update issue templates

Author: dbuezas

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,24 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**yaml**
+```yaml
+type: custom:plotly-graph
+entities:
+  - entity: sensor.my_sensor
+```
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**How would it be defined in yaml?**
+```yaml
+type: custom:plotly-graph
+entities:
+  - entity: sensor.monthly_internet_energy
+     entity_feature_config: xxx
+global_feature_config: xxx
+```
+
+**Scribble**
+When applicable, paste a drawing of how the feature would look like
+
+**Additional context**
+Add any other context or screenshots about the feature request here.