Add new issue templates.

.github/ISSUE_TEMPLATE/bug_report_image.md

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+---
+name: Image Bug Report Template
+about: "Bugs report on commands that handle images, like converting or extracting."
+
+---
+
+### Prerequisites
+
+* [ ] Are you running the latest version?
+* [ ] Can you reproduce the problem in the debug version?
+
+### Check and fill as appropriate:
+* [ ] I was running Aaru under Windows [version here]...
+* [ ] I was running Aaru under Linux [version here]...
+* [ ] I was running Aaru under macOS [version here]...
+* [ ] ...in 32-bit
+* [ ] ...in 64-bit
+* [ ] ...using an Intel / AMD processor
+* [ ] ...using an ARM or Apple Silicon processor
+    * **Image format**:  
+    * **Application that created the image**:
+* [ ] I was converting the image...
+    * ...**Destination image format**:
+* [ ] I was listing the filesystem contents...
+* [ ] I was extracting the filesystem contents...
+    * ...**Filesystem**:
+    * [ ] Analyze command recognizes the filesystem
+* [ ] I was creating a metadata sidecar
+* [ ] I was checksumming the image
+* [ ] I was verifying the image
+
+### Description
+
+<!-- Description of the bug -->
+
+### Exact command line used:
+
+`Aaru [command] [parameters]`
+
+### Expected behavior:
+<!-- What did you expect to happen -->
+
+### Actual behavior:
+<!-- What actually happened -->
+
+### Output of command execution with debug output enabled
+```
+Paste the whole output of the executed command when you append '-d' to your command line parameters here
+```
+
+### Image
+<!-- Upload the image, compressed and with the number of this issue. -->
+<!--- If the image contains personal data contact the project lead, and the image contents will be handled confidentially under the GDPR requirements. -->