Adding Issue template

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: Report a bug to help us improve.
+title: "[BUG]: "
+labels: ["bug"]
+assignees: ""
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ### Bug Report
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: "Checklist"
+      options:
+        - label: "I have checked the existing issues."
+          required: true
+        - label: "I follow [Contributing Guidelines](https://github.com/Indrajeet-S/leetcode-board/blob/main/CONTRIBUTING.md) of this project."
+          required: true
+
+  - type: input
+    id: title
+    attributes:
+      label: Title
+      description: Brief, descriptive title of the bug
+      placeholder: e.g., "Button not working on mobile"
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A clear and concise description of what the bug is.
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: List the steps to reproduce the bug.
+      placeholder: |
+        1. Go to '...'
+        2. Click on '...'
+        3. See error
+
+  - type: textarea
+    id: expected_behavior
+    attributes:
+      label: Expected Behavior
+      description: Describe what you expected to happen.
+
+  - type: textarea
+    id: actual_behavior
+    attributes:
+      label: Actual Behavior
+      description: Describe what actually happened.
+
+  - type: input
+    id: environment
+    attributes:
+      label: Environment
+      description: Describe the environment (e.g., OS, Browser, App Version)
+      placeholder: e.g., "Windows 10, Chrome v92.0"
+
+  - type: textarea
+    id: additional_context
+    attributes:
+      label: Additional Context
+      description: Provide any additional information about the bug.

.github/ISSUE_TEMPLATE/enhancement.yml

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+name: Enhancement Suggestion
+description: Suggest an improvement to existing features or functionality.
+title: "[ENHANCEMENT]: "
+labels: ["enhancement"]
+assignees: ""
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ### Enhancement Suggestion
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: "Checklist"
+      options:
+        - label: "I have checked the existing issues."
+          required: true
+        - label: "I follow [Contributing Guidelines](https://github.com/Indrajeet-S/leetcode-board/blob/main/CONTRIBUTING.md) of this project."
+          required: true
+
+  - type: input
+    id: title
+    attributes:
+      label: Title
+      description: Brief, descriptive title of the enhancement
+      placeholder: e.g., "Improve loading speed on dashboard"
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A clear and concise description of the current functionality and suggested improvement.
+
+  - type: textarea
+    id: current_behavior
+    attributes:
+      label: Current Behavior
+      description: Describe the existing behavior or functionality as it stands.
+
+  - type: textarea
+    id: proposed_improvement
+    attributes:
+      label: Proposed Improvement
+      description: Outline the suggested enhancement and how it will improve the user experience.
+
+  - type: textarea
+    id: benefits
+    attributes:
+      label: Benefits
+      description: List the advantages or value this improvement would add.
+
+  - type: textarea
+    id: additional_context
+    attributes:
+      label: Additional Context
+      description: Provide any other information that might help in implementing this improvement.

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature Request
+description: Suggest a new feature for the project.
+title: "[FEATURE]: "
+labels: ["enhancement", "feature request"]
+assignees: ""
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ### Feature Request
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: "Checklist"
+      options:
+        - label: "I have checked the existing issues."
+          required: true
+        - label: "I follow [Contributing Guidelines](https://github.com/Indrajeet-S/leetcode-board/blob/main/CONTRIBUTING.md) of this project."
+          required: true
+
+  - type: input
+    id: title
+    attributes:
+      label: Title
+      description: Brief, descriptive title of the feature
+      placeholder: e.g., "Add dark mode option"
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A clear and concise description of the feature you’d like to see.
+
+  - type: textarea
+    id: problem_statement
+    attributes:
+      label: Problem Statement
+      description: Explain the problem this feature would address and why it’s important.
+
+  - type: textarea
+    id: proposed_solution
+    attributes:
+      label: Proposed Solution
+      description: Describe your proposed solution or approach to the problem.
+
+  - type: textarea
+    id: benefits
+    attributes:
+      label: Benefits
+      description: List the main benefits or improvements this feature will bring to users.
+
+  - type: textarea
+    id: additional_context
+    attributes:
+      label: Additional Context
+      description: Provide any additional information related to the feature request.