Add confirmation option to issue templates for guideline acknowledgment

Author: SableRaf

.github/ISSUE_TEMPLATE/1_new-library.yml

@@ -38,6 +38,9 @@ body:
     attributes:
       label: Guidelines Confirmation
       description: I confirm that I have read the Library Guidelines and that my library follows the guidelines.
+      options:
+        - label: I confirm
+          required: true
     validations:
       required: true
   - type: markdown

.github/ISSUE_TEMPLATE/2_new-tool.yml

@@ -38,6 +38,9 @@ body:
     attributes:
       label: Guidelines Confirmation
       description: I confirm that I have read the Tool Guidelines and that my tool follows the guidelines.
+      options:
+        - label: I confirm
+          required: true
     validations:
       required: true
   - type: markdown

.github/ISSUE_TEMPLATE/3_new-mode.yml

@@ -38,6 +38,9 @@ body:
     attributes:
       label: Guidelines Confirmation
       description: I confirm that I have read the Mode Overview and that my mode follows the guidelines.
+      options:
+        - label: I confirm
+          required: true
     validations:
       required: true
   - type: markdown

.github/ISSUE_TEMPLATE/4_new-examples.yml

@@ -38,6 +38,9 @@ body:
     attributes:
       label: Guidelines Confirmation
       description: I confirm that I have read the [Examples Overview](https://github.com/processing/processing/wiki/Examples-Overview) and that my example pack follows the guidelines.
+      options:
+        - label: I confirm
+          required: true
     validations:
       required: true
   - type: markdown