Add issues templates (#809)

* Update issue templates

* Chage bug template

---------

Co-authored-by: pefontana <[email protected]>

.github/ISSUE_TEMPLATE/blank-issue.md

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+---
+name: Blank Issue
+about: Blank Issue
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: 'Report an unexpected behavior '
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Where are you using Cairo Native**
+In which project are you using Cairo Native
+
+**Version**
+What Cairo Native commit are you using
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Exact commands to reproduce the bug. Also, if you can provide a minimal example, it would be really useful—whether it's a small program, contract, or the exact libfunc that triggers the error
+* What project are you running
+* Exact commands to reproduce the bug.
+* Which Cairo, Sierra, or Starknet transaction are you running
+* What Error are you getting
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. MacOS, Ubuntu 22.04 LTS]
+ - Architecture [e.g. x86_64, aarch64]
+
+**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 a feature for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your related to a Starknet project? **
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+
+**Additional context**
+Add any other context or screenshots about the feature request here.