Update issue templates

Author: MonikaSvata

.github/ISSUE_TEMPLATE/matryoshka-issue-task-template.md

@@ -0,0 +1,21 @@
+---
+name: Matryoshka Issue/Task Template
+about: Issues/work items for project Matryoshka
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+### Description
+
+### Definition of Done / Acceptance Criteria:
+- [ ] ...
+- [ ] Documentation updated
+- [ ] Testing passed
+
+### Dependencies
+- #PR number
+- Other dependencies
+
+### Other Details