Update issue templates (#675)

Added issue template for bug reports and feature request.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,47 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Recommendation: attach a minimal working example**
+Generally, the easier it is for us to reproduce the issue, the faster we can work on it. It is not required, but if you can, please:
+
+1. Reproduce using the [`blobs` dataset](https://spatialdata.scverse.org/en/latest/generated/spatialdata.datasets.blobs.html)
+    ```python
+    from spatialdata.datasets import blobs
+    sdata = blobs()
+    ```
+    You can also use [`blobs_annotating_element`](https://spatialdata.scverse.org/en/latest/generated/spatialdata.datasets.blobs_annotating_element.html) for more control:
+    ```
+    from spatialdata.datasets import blobs_annotating_element
+    sdata = blobs_annotating_element('blobs_labels')
+    ```
+2. If the above is not possible, reproduce using a public dataset and explain how we can download the data.
+3. If the data is private, consider sharing an anonymized version/subset via a [Zulip private message](https://scverse.zulipchat.com/#user/480560), or provide screenshots/GIFs showing the behavior.
+
+**Describe the bug**
+A clear and concise description of what the bug is; please report only one bug per issue. 
+
+**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.
+
+**Desktop (optional):**
+ - OS: [e.g. macOS, Windows, Linux]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+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.