Add issue templates

.github/ISSUE_TEMPLATE/api-deprecation.md

@@ -0,0 +1,25 @@
+---
+name: API deprecation
+about: Suggest the deprecation of an API component defined by ArduinoCore-API.
+title: ""
+labels: enhancement
+assignees: ""
+---
+
+### API component
+
+<!-- Tell us which API component the deprecation applies to. -->
+
+### Description
+
+<!-- A clear and concise description of the suggestion. -->
+<!-- What is the reason for the deprecation? -->
+
+### Replacement API component
+
+<!-- What should be used instead of the deprecated API component? -->
+<!-- Is this replacement available to all users (e.g., is it provided by the C++ standard version used in major boards platforms)? -->
+
+### Additional information
+
+<!-- Add any other context for the suggestion here. -->

.github/ISSUE_TEMPLATE/api-improvement.md

@@ -0,0 +1,24 @@
+---
+name: API improvement
+about: Suggest an improvement to an existing API component.
+title: ""
+labels: enhancement
+assignees: ""
+---
+
+### API component
+
+<!-- Tell us which API component the improvement applies to. -->
+
+### Description
+
+<!-- A clear and concise description of the suggestion. -->
+
+### Is this a breaking change?
+
+<!-- Would this change require any users to change their code? -->
+<!-- Would this change require any boards platform authors to change their configuration files or release system? -->
+
+### Additional information
+
+<!-- Add any other context for the request here. -->

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,29 @@
+---
+name: Bug report
+about: Report problems with the code in this repository.
+title: ""
+labels: bug
+assignees: ""
+---
+
+### Description
+
+<!-- A clear and concise description of the bug. -->
+
+### Environment
+
+- Boards platform name:
+- Boards platform version (as shown in Boards Manager):
+- ArduinoCore-API version (if you manually installed it):
+
+### Current behavior
+
+<!-- Provide a minimal sketch that demonstrates the issue. -->
+
+### Expected behavior
+
+<!-- Describe what you expect to happen when the demonstration sketch is run. -->
+
+### Additional information
+
+<!-- Add any other context about the problem here. -->

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,10 @@
+contact_links:
+  - name: Learn about the Arduino language
+    url: https://www.arduino.cc/reference/en
+    about: User documentation is available at the Arduino language reference.
+  - name: Support request
+    url: https://forum.arduino.cc/
+    about: We can help you out on the Arduino Forum!
+  - name: Discuss ArduinoCore-API development
+    url: https://groups.google.com/a/arduino.cc/g/developers
+    about: Arduino Developers Mailing List

.github/ISSUE_TEMPLATE/new-api-component.md

@@ -0,0 +1,15 @@
+---
+name: New API component
+about: Suggest the addition of a new API component to ArduinoCore-API.
+title: ""
+labels: enhancement
+assignees: ""
+---
+
+### Description
+
+<!-- A clear and concise description of the API component you want added. -->
+
+### Additional information
+
+<!-- Add any other context for the request here. -->

.github/ISSUE_TEMPLATE/other-enhancement.md

@@ -0,0 +1,22 @@
+---
+name: Other enhancement
+about:
+  Suggest an improvement for this project that doesn't fit in the specific categories
+  above.
+title: ""
+labels: enhancement
+assignees: ""
+---
+
+### Description
+
+<!-- A clear and concise description of the enhancement. -->
+
+### Is this a breaking change?
+
+<!-- Would this change require any users to change their code? -->
+<!-- Would this change require any boards platform authors to change their configuration files or release system? -->
+
+### Additional information
+
+<!-- Add any other context for the request here. -->