replace github stuff for codeowners and gh actions

Author: Will Smith

.github/CODEOWNERS

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+*                                   @recursionpharma/information-technology

.github/apt-packages.txt

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+# What?
+
+-   a brief list of relevant changes (if small, can point to title i.e., "see above")
+
+# Why?
+
+-   reason(s) why this change was necessary (feel free to link to slack, asana, or other correspondence)

.github/pull_request_template.md

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+---
+name: "StackStorm Pack Workflow"
+
+on:
+  push:
+    branches:
+      - "trunk"
+  pull_request:
+    branches:
+      - "trunk"
+
+jobs:
+  call_pack_workflow
+    uses: "recursionpharma/github_workflows_rxrx_it/.github/workflows/stackstorm_pack.yml@trunk"
+    secrets: "inherit"