adding github workflow templates for better issues

.github/ISSUE_TEMPLATE.md

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+<!--
+Thank you for taking the time to report an issue! We appreciate your usage.
+
+If you're filing a bug report, please consider including the following information:
+
+* A minimal code snippet that reproduces the bug.
+* The command you invoked (e.g., `DenseClus().fit(df)`), ideally including the `verbose=True` flag.
+* The current OS system and python versions.
+* The DenseClus version (`denseclus --version`).
+-->

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+Thank you for contributing to DenseClus! To help us out with reviewing, please consider the following:
+
+- Does this pull request include a summary of the change? (See below.)
+- Does this pull request include a descriptive title?
+- Does this pull request include references to any relevant issues?
+-->
+
+## Summary
+
+<!-- What's the purpose of the change? What does it do, and why? -->
+
+## Function
+
+<!-- How would it function -->

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    open-pull-requests-limit: 10