Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here, e.g. ECU logs, known seed/key pairs.

.github/ISSUE_TEMPLATE/feature-request---ecu-definition.md

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+---
+name: 'Feature request : ECU definition'
+about: Add an ECU with a known DLL/SMR-D that isn't currently in UnlockECU
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**ECU Name**
+Name of the target, e.g. `CRD3NFZ`
+
+**Source file**
+Name of the source file where the algorithm and definition can be reverse-engineered from, e.g. `CRD3NFZ_crd3s2_sec9A_12_34_01.dll`
+
+Without a known source file, the issue will be closed as it cannot be worked on. Please note that many SMR-D files do *not* include unlocking functionality. If you are referencing a SMR-D file, ensure that the file has unlocking capabilities first.
+
+**Additional context**
+Add any other optional context about the feature request here, such as security levels, expected seed-key pairs etc.
+
+**Checklist**
+_Please delete either YES or NO depending on the checklist question_
+
+I have checked that the requested definition does not exist in [db.json](https://github.com/jglim/UnlockECU/blob/main/UnlockECU/db.json) : [YES/NO]
+_Some ECUs share a common definition, for example, the CRD3 family uses the CRD3NFZ definition, and are linked together with an [alias](https://github.com/jglim/UnlockECU/blob/bcb77faa30da1babce0aca79a2d63c99618226c2/UnlockECU/db.json#L2019). If an alias is missing, please use the "Bug Report" template instead._

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**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.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.