Docs: update issue templates (#21)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,55 @@
+---
+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 (Library test):
+1. Declare a rust test 'fn test_xxx() { ... }' or typescript test 'it_should(function () { ... })'
+2. Execute test function
+3. See error
+
+Or (Shell code):
+
+1. Attach necessary resources to execute shell code
+2. Put down some shell code 'cargo run --bin typst-ts-cli -- ...'
+3. Execute shell code
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 22]
+
+**Package/Software version (using command `typst-ts-cli --VV full` and paste down the output):**
+```plain
+typst-ts-cli version 0.1.x
+features: pdf raster serde_json serde_rmp tir web_socket
+
+cli-ver: 0.1.x
+cli-rev: 99814b4c...
+cli-build: x86_64... with ... mode at ...
+
+rustc-ver: 1.69.x
+rustc-rev: 84c898d6...
+rustc-build: x86_64... with LLVM 15.x
+```
+
+**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 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.