chore: added a dependabot configuration and the default pull-request template.

Author: mridang

.github/dependabot.yml

@@ -0,0 +1,52 @@
+version: 2
+updates:
+  - package-ecosystem: 'npm'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+    commit-message:
+      prefix: 'chore(deps):'
+    open-pull-requests-limit: 10
+    groups:
+      npm-version-updates:
+        patterns:
+          - '*'
+        applies-to: 'version-updates'
+      npm-security-updates:
+        patterns:
+          - '*'
+        applies-to: 'security-updates'
+
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+    commit-message:
+      prefix: 'chore(deps):'
+    open-pull-requests-limit: 10
+    groups:
+      actions-version-updates:
+        patterns:
+          - '*'
+        applies-to: 'version-updates'
+      actions-security-updates:
+        patterns:
+          - '*'
+        applies-to: 'security-updates'
+
+  - package-ecosystem: 'docker'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+    commit-message:
+      prefix: 'chore(deps):'
+    open-pull-requests-limit: 10
+    groups:
+      actions-version-updates:
+        patterns:
+          - '*'
+        applies-to: 'version-updates'
+      actions-security-updates:
+        patterns:
+          - '*'
+        applies-to: 'security-updates'

.github/pull_request_template.md

@@ -0,0 +1,36 @@
+<!--- Provide a general summary of your changes in the Title above -->
+
+## Description
+
+<!--- Describe your changes -->
+
+## Related Issue
+
+<!--- This project only accepts pull requests related to open issues -->
+<!--- If suggesting a new feature or change, please discuss it in an issue first -->
+<!--- If fixing a bug, there should be an issue describing it with steps to reproduce -->
+<!--- Please link to the issue here: -->
+
+## Motivation and Context
+
+<!--- Why is this change required? What problem does it solve? -->
+
+## How Has This Been Tested?
+
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, and the tests you ran to -->
+<!--- see how your change affects other areas of the code, etc. -->
+
+## Documentation:
+
+<!--- Upon PR's approval, link the wiki page for your corresponding changes here. -->
+
+## Checklist:
+
+- [ ] I have updated the documentation accordingly.
+- [ ] I have assigned the correct milestone or created one if non-existent.
+- [ ] I have correctly labeled this pull request.
+- [ ] I have linked the corresponding issue in this description.
+- [ ] I have requested a review from at least 2 reviewers
+- [ ] I have checked the base branch of this pull request
+- [ ] I have checked my code for any possible security vulnerabilities