Add issue templates

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: Report any errors or incorrect behaviors to help improve PyCytominer.
+title: "Bug: "
+labels: [bug]
+
+body:
+  - type: textarea
+    id: example
+    attributes:
+      label: Example code with output
+      description: >
+        Please provide the code snippet that is producing the unexpected behavior along with the output.
+    validations:
+      required: true
+  - type: textarea
+    id: problem
+    attributes:
+      label: Issue description
+      description: >
+        Please provide a written description of the issue as shown in the above code example.
+    validations:
+      required: true
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected behavior
+      description: >
+        Please describe and/or show a code example of the expected behavior.
+        You can also provide an example solution here if you have one.
+    validations:
+      required: true
+  - type: textarea
+    id: additional-info
+    attributes:
+      label: Additional information
+      description: >
+        Provide any further information that will help with understanding how to fix this bug.
+      placeholder: >
+        Examples of other information:
+          - Screenshots
+          - Operating system
+          - PyCytominer version

.github/ISSUE_TEMPLATE/documentation_request.yml

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+name: Documentation Request
+description: Report missing PyCytominer documentation and/or suggest improvements.
+title: "Doc: "
+labels: [documentation]
+
+body:
+  - type: textarea
+    id: doc-location
+    attributes:
+      label: File location of the documentation
+      description: >
+        Please provide the location of the documentation that this issue is referencing.
+      placeholder: Example - https://github.com/cytomining/pycytominer/edit/master/docs/index.rst
+    validations:
+      require: true
+  - type: textarea
+    id: problem
+    attributes:
+      label: Documentation issue
+      description: >
+        Please provide a description regarding what documentation is missing or needs to be fixed/updated.
+    validations:
+      required: true
+  - type: textarea
+    id: suggestion
+    attributes:
+      label: Suggested solution
+      description: >
+        Please provide your suggestion for what to change in the documentation. If the suggestion involves changing already exisiting documentation, please explain the suggested change is better.
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature Request
+description: Suggest an idea to enhance the current functionality of PyCytominer.
+title: "FeatRequest: "
+labels: [enhancement]
+
+body:
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Feature type
+      description: Please check the feature type you would like to propose.
+      options:
+        - label: >
+            Add new functionality
+        - label: >
+            Change existing functionality
+  - type: textarea
+    id: description
+    attributes:
+      label: General description of the proposed functionality
+      description: >
+        Please *concisely* describe what the proposed functionality is, if it is due to an existing issue, and how it will improve PyCytominer.
+    validations:
+      required: true
+  - type: textarea
+    id: feature-example
+    attributes:
+      label: Feature example
+      description: >
+        Please provide an example of this functionality (e.g., psuedocode).
+    validations:
+      required: true
+  - type: textarea
+    id: alternative-ideas
+    attributes:
+      label: Alternative Solutions
+      description: >
+        If applicable, please provide any alternative solutions/ideas for this functionality.
+  - type: textarea
+    id: additional-info
+    attributes:
+      label: Additional information
+      description: >
+        Provide any further information or context.

.github/ISSUE_TEMPLATE/general_questions.yml

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+name: General Questions
+description: Provide general questions or feedback regarding PyCytominer.
+title: "Question: "
+labels: [question]
+
+body:
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Confirmation
+      options:
+        - label: >
+            I can confirm that this question/issue does not fall within the other three issue types already available
+  - type: textarea
+    id: question
+    attributes:
+      label: General question or description
+      description: >
+        Please provide the question or description of an issue.
+    validations:
+      required: true