Initial checkin of Pika from heckimp

.gitlab/issue_templates/Default.md

@@ -0,0 +1,41 @@
+<!-- ⚠️ IMPORTANT: READ ME! ⚠️
+This is the default template for bug reports.
+For feature requests or performance issues, please switch instead to the appropriate template in the "Choose a template" list.
+
+It is important that you fill all the fields of the template.
+-->
+
+### Environment/Versions
+
+- PIKA version:
+- Package: <!--[flatpak? Installer from https://heckin.technology/AlderconeStudio/PIKApp? If another installer, tell us where from] (write it after the > symbol)-->
+- Operating System: <!--[Windows? macOS? Linux? All?] (write it after the > symbol) -->
+
+<!--Note: bug reporters are expected to have verified the bug still exists
+either in the last stable version of PIKA or on updated development code
+(master branch).-->
+
+### Description of the bug
+
+<!--Please describe your issue with details.
+Add screenshot or other files if needed.(write it after the > symbol)-->
+
+### Reproduction
+
+Is the bug reproducible? <!--[Always / Randomly / Happened only once ] (write it after the > symbol)-->
+
+Reproduction steps:
+
+1. 
+2. 
+3. 
+
+…
+
+Expected result:
+
+Actual result:
+
+### Additional information
+
+If you have a backtrace for a crash or a warning, paste it here.

.gitlab/issue_templates/feature.md

@@ -0,0 +1,15 @@
+**Operating System:** <!--[Windows? macOS? Linux? All?] (write it after the > symbol) -->
+
+### Description of the feature
+
+<!-- Please describe your feature with details.
+
+Add screenshots, design images or other files which would help for
+understanding the feature or for implementation.
+Also add links when needed, for instance for implementation standards
+or other relevant resources.-->
+
+### Use cases
+
+<!-- If not obvious, explain the use cases or problems to solve. -->
+

.gitlab/issue_templates/performance.md

@@ -0,0 +1,34 @@
+### Environment/Versions
+
+- PIKA Version:
+- Package: <!--[flatpak? Installer from https://heckin.technology/AlderconeStudio/PIKApp? If another installer, tell us where from] (write it after the > symbol)-->
+- Operating System: <!--[Windows? macOS? Linux? All?] (write it after the > symbol) -->
+
+<!-- Note: bug reporters are expected to have verified the bug still exists
+either in the last stable version of PIKA or on updated development code
+(master branch). -->
+
+### Issue Description
+
+<!-- Please provide a general description of the issue. -->
+
+### Performance Log
+
+<!-- Please record a performance log demonstrating the issue, and attach it to the report.
+For more information, see
+
+  https://developer.pika.org/core/debug/performance-logs/
+
+-->
+
+### Performance Log Description
+
+<!-- Please describe in detail the actions performed in the performance log.
+If you added empty event markers to the log, please provide a description for them here.
+If you recorded a screencast while recording the log, please attach it here.  -->
+
+### Additional Information
+
+<!-- If there is any additional information, please provide it here. -->
+
+/label ~"1. Performance"