Improve issue templates with new format

.github/ISSUE_TEMPLATE/1-bug_report.yml

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+name: Bug report
+description: File a bug report
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: Thanks for taking the time to fill out this bug report!
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      placeholder: Incorrect behaviour, error message, stacktrace...
+      description: Please describe what you see and what you expected to happen instead.
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Reproduction and additional details
+      placeholder: Snippet of code, contextual information...
+      description: Please provide information that could help reproduce the problem.
+    validations:
+      required: false
+  - type: input
+    id: krossbow-version
+    attributes:
+      label: Krossbow version
+    validations:
+      required: true
+  - type: dropdown
+    id: krossbow-modules
+    attributes:
+      label: Krossbow modules
+      description: |
+        Select the Krossbow modules that you're using in your project. You don't have to specify all transitive 
+        dependencies (the ones that you're declaring in your project are enough), but it's ok if you do.
+        If a module you're using is not in the list, please check `Other` and specify it in the "additional details"
+        section.
+      multiple: true
+      options:
+        - krossbow-stomp-core
+        - krossbow-stomp-jackson
+        - krossbow-stomp-kxserialization
+        - krossbow-stomp-kxserialization-json
+        - krossbow-stomp-moshi
+        - krossbow-websocket-builtin
+        - krossbow-websocket-core
+        - krossbow-websocket-ktor
+        - krossbow-websocket-okhttp
+        - krossbow-websocket-sockjs
+        - krossbow-websocket-spring
+        - Other (please specify in "additional details")
+    validations:
+      required: true
+  - type: input
+    id: kotlin-version
+    attributes:
+      label: Kotlin version
+    validations:
+      required: true
+  - type: dropdown
+    id: kotlin-platforms
+    attributes:
+      label: Kotlin target platforms
+      description: |
+        Select the Kotlin target platform(s) where you noticed the bug. If a target you're using is not in the list,
+        please check `Other` and specify it in the "additional details" section.
+      multiple: true
+      options:
+        - All targets / irrelevant
+        - Android
+        - JVM (non-Android)
+        - JS (browser)
+        - JS (node)
+        - Native - iOS
+        - Native - watchOS
+        - Native - tvOS
+        - Native - macOS
+        - Native - Linux
+        - Native - Windows (minGW)
+        - Native - Android NDK
+        - Other (please specify in "additional details")
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/2-feature_request.yml

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+name: Feature request or enhancement
+description: Suggest an idea for this project, be it a big feature or a small UX improvement
+labels: ["enhancement"]
+body:
+  - type: markdown
+    attributes:
+      value: Thanks for taking the time to suggest ideas!
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem / use case
+      description: |
+        Why is this useful? What problem or inconvenience does it solve?
+        Don't hesitate to provide some context about what you're trying to achieve on a larger scale, this helps
+        designing the feature with a real use-case in mind, possibly in a different way than what's suggested here.
+    validations:
+      required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: Feature (solution)
+      description: What are you suggesting? What would it look like?
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Current alternatives
+      description: Is there a way -maybe inconvenient- to achieve your goal at the moment, or a workaround?
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/3-documentation_issue.yml

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+name: Documentation
+description: Report a problem with the documentation
+labels: [ "documentation" ]
+body:
+  - type: markdown
+    attributes:
+      value: Thanks for taking the time to open an issue!
+  - type: textarea
+    id: description
+    attributes:
+      label: Problem description
+      description: |
+        Please describe the problem as concisely as possible.
+        If it's a clear typo, don't hesitate to open a PR to fix it instead of opening an issue.
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/4-dependency_upgrade.yml

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+name: Dependency upgrade
+description: Upgrade a dependency
+title: Upgrade ARTIFACT_NAME to version VERSION
+labels: ["dependencies"]
+body:
+- type: textarea
+  id: additional-info
+  attributes:
+    label: Additional information
+    description: If this version upgrade is necessary for a specific reason, please describe why.
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: true
+contact_links:
+  - name: Ask a question
+    about: For general usage questions, please use GitHub Discussions
+    url: https://github.com/joffrey-bion/krossbow/discussions