Add cheatsheet to README #568

Job	Run time
Version Bump 🤜🤛	0s
Audit Dependencies 🕵️‍♂️ / oysteR scan 🦪	1m 43s
gitleaks 💧 / gitleaks 💧	3s
gitleaks 💧 / PII Check 💳	0s
Coverage 📔 / Coverage 📔	1m 26s
Coverage 📔 / Covtracer 🐄	0s
Grammar Check 🔤 / Check 📝	14s
License Check 🃏 / Check 🚩	34s
Check URLs 🌐 / Validate Links 🔎	5s
SuperLinter 🦸‍♀️ / SuperLinter 🦸‍♂️	1m 26s
SuperLinter 🦸‍♀️ / Lint R code 🧶	1m 23s
R CMD Check 🧬 / ghcr.io/insightsengineering/rstudio, version latest	1m 23s
Roxygen 🅾 / Manual pages check 🏁	1m 30s
Spell Check 🆎 / Check spelling 🔠	1m 24s
Version Check 🏁 / Emoji in NEWS.md 📰	13s
Version Check 🏁 / Version check 🏁	4s
Coverage 📔 / Publish coverage report 📰	1s
R CMD Check 🧬 / Publish JUnit HTML report 📰	1s
R CMD Check 🧬 / Upload build tar.gz	1s
	11m 31s

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