Core: Add in black linting and staleness actions

.github/workflows/black.yml

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+name: Black python linter
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: psf/black@stable
+        with:
+          options: "--check --diff --verbose"
+          src: "./volatility3"

.github/workflows/stale.yml

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+name: Close inactive issues
+on:
+  schedule:
+    - cron: "30 1 * * *"
+
+jobs:
+  close-issues:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/stale@v5
+        with:
+          days-before-issue-stale: 200
+          days-before-issue-close: 60
+          stale-issue-label: "stale"
+          stale-issue-message: "This issue is stale because it has been open for 200 days with no activity."
+          close-issue-message: "This issue was closed because it has been inactive for 60 days since being marked as stale."
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          exempt-issue-labels: "enhancement,plugin-request,question"