Added gitignore templates

ignore/.github/CODEOWNERS

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+# Order is important. The LAST matching pattern has the MOST precedence.
+# gitignore style patterns are used, not globs.
+# https://docs.github.com/articles/about-codeowners
+# https://git-scm.com/docs/gitignore
+
+# Catch All - Defer to the gitignore maintainers
+* @github/gitignore-maintainers

ignore/.github/PULL_REQUEST_TEMPLATE.md

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+### Reasons for making this change
+
+_TODO_
+<!---
+Please provide some background for this change.
+--->
+
+### Links to documentation supporting these rule changes
+
+_TODO_
+
+<!---
+Link to the project docs, any existing .gitignore files that project may have in it's own repo, etc
+--->
+
+### If this is a new template
+
+Link to application or project’s homepage: TODO
+
+### Merge and Approval Steps
+- [ ] Confirm that you've read the [contribution guidelines](https://github.com/github/gitignore/tree/main?tab=readme-ov-file#contributing-guidelines) and ensured your PR aligns
+- [ ] Ensure CI is passing
+- [ ] Get a review and Approval from one of the maintainers

ignore/.github/workflows/stale.yml

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+name: Stale
+
+# **What it does**: Close pull requests after no updates for 180 days.
+# **Why we have it**: This repository gets a lot of PRs, and the maintainers team is small.
+#                     This helps reduce the open PRs to ones that are most desired by the community.
+# **Who does it impact**: Contributors and maintainers of github/gitignore.
+
+on:
+  schedule:
+    - cron: '20 16 * * *' # Run every day at 16:20 UTC / 8:20 PST
+
+permissions:
+  actions: write
+  contents: write # only for delete-branch option
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639 # v9.1.0
+        with:
+          stale-pr-message: 'This PR is stale because there have been no updates in 90 days. It will close after 365 days of inactivity. Leave a comment if you want to keep it open.'
+          close-pr-message: 'This PR has been closed because it was inactive for 365 days. If you want to continue working on it, please open a new PR.'
+          days-before-stale: 90
+          days-before-close: 365
+          stale-pr-label: 'stale'
+          exempt-pr-labels: 'keep'
+          close-issue-reason: not_planned
+          ascending: true # Sort PRs by last updated date in ascending order
+          operations-per-run: 300