replace issue templates with forms

Enforce properly structured bug reports and package requests.

.github/ISSUE_TEMPLATE/01-bug-report.yml

@@ -0,0 +1,38 @@
+name: "Bug report"
+description: "Create a report to help us improve"
+title: "[Bug]: "
+labels: ["bug report"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        This is a bug tracker of the official Termux packges. Please do not report issues of third-party software there, but ask in [GitHub Discussions](https://github.com/termux/termux-packages/discussions) or [Community Social Media](https://wiki.termux.com/wiki/Community) instead. Use search to check whether your issue has been already reported.
+
+        Android versions 5.x and 6.x are not supported anymore. Issues happening on these operating system versions will not be resolved.
+
+        Before submitting any repository service issues, check https://github.com/termux/termux-packages/issues/6726.
+
+        To submit a bug report, fill the form below. Provide as much as possible information about the encountered issue. We may request extended information such as `strace` logs if consider necessary. This will help package maintainers to understand the problem correctly and provide a solution. Make sure that your logs do not leak sensitive information (passwords, API keys, etc). Be patient, do not expect that issue could get resolved immediately.
+  - type: textarea
+    attributes:
+      label: Problem description
+      description: |
+        A clear and concise description of what the problem is. You may attach the logs, screenshots, screen video recording and whatever else that will help to understand the issue.
+
+        Issues without proper description will be closed without solution.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: What steps will reproduce the bug?
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: What is the expected behavior?
+  - type: textarea
+    attributes:
+      label: System information
+      description: Provide there output of `termux-info`.
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/02-package-request.yml

@@ -0,0 +1,40 @@
+name: "Package request"
+description: "Request a new package"
+title: "[Package]: "
+labels: ["package request"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        If our repositories do not provide a package that fullfill your needs, consider requesting it. Use search to check whether package has been requested previously.
+
+        To submit a request of a new package, fill the form below. Be patient, do not expect that package will get added immediately.
+  - type: textarea
+    attributes:
+      label: Package description
+      description: A clear and concise description of what this package do and why it should be added to Termux repositories.
+    validations:
+      required: true
+  - type: input
+    attributes:
+      label: Home page URL
+  - type: input
+    attributes:
+      label: Source code URL
+      placeholder: Link to Git or source archive
+    validations:
+      required: true
+  - type: checkboxes
+    attributes:
+      label: Packaging policy acknowledgement
+      description: Not every package could be added and do not forget that Termux is operated by limited team and hosting resources.
+      options:
+        - label: I have read and understand the [Packaging Policy](https://github.com/termux/termux-packages/blob/master/CONTRIBUTING.md#packaging-policy).
+          required: true
+  - type: textarea
+    attributes:
+      label: Additional information
+      description: |
+        Have you tried to compile it on device?
+
+        If it did not work then provide the error you ran into. Otherwise please share build steps and any patches that you had to apply.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,37 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-
----
-
-<!--
-IMPORTANT: we are not accepting issues about Termux
-installations running on Android 5.x-6.x.
-
-If you are about to post an issue about `apt` and `pkg` commands failing with `repository is under maintenance or down` errors, then please first check https://github.com/termux/termux-packages/wiki/Package-Management and **change your mirror** and see if that resolves your issues.
--->
-
-**Problem description**
-<!-- 
-A clear and concise description of what the problem is.
-You may post screenshots in addition to description.
--->
-
-**Steps to reproduce**
-<!--
-Steps to reproduce the behavior. Please post all necessary
-commands that are needed to reproduce the issue.
--->
-
-**Expected behavior**
-<!--
-A clear and concise description of what you expected to happen.
--->
-
-**Additional information**
-<!--
-Post output of command 'termux-info' between '```' (code formatting).
--->
-```
-
-```

.github/ISSUE_TEMPLATE/package_request.md

@@ -1,23 +0,0 @@
----
-name: Package request
-about: Suggest a new package.
----
-
-## Requesting new package
-
-- [ ] I have read [Termux packaging policy](https://github.com/termux/termux-packages/blob/master/CONTRIBUTING.md#packaging-policy).
-
-***
-
-### Package description
-<!-- REQUIRED -->
-
-**Link to home page and sources**
-<!-- REQUIRED -->
-1. Home page:
-2. Source code:
-
-**Additional information**
-Have you compiled or tried to compile the package on device?
-* If it did not work then please provide the error you ran into.
-* If it did work then please share build steps and any patches that you had to apply.