common: Add script for showing build/commit history

[silkeh]

Summary

This PR adds a script that allows one to easily print a few things for a given timespan:

• Commit log
• Build log (all builds on the build server)
• Update log (all package updates based on the build log)

The output can be given for both terminal (-f tty, the default) and Markdown (-f md). The former includes clickable links for compatible terminal emulators.

Resolves #713

Test Plan

Terminal output:

Markdown output:

6 commits:

• .github: use 'Package Update Request' label in issue template
• common: Add script for showing build/commit history
• corectrl: Update to v1.3.8
• python-idna: Update to 3.6
• python-imageio: Update to 2.33.0
• python-importlib-resources: Update to 6.1.1

6 builds:

• corectrl 1.3.8-35
• gnucash 5.4-48
• kmymoney 5.1.3-29
• python-idna 3.6-12
• python-imageio 2.33.0-8
• python-importlib-resources 6.1.1-10

6 updates:

• corectrl 1.3.8-35
• gnucash 5.4-48
• kmymoney 5.1.3-29
• python-idna 3.6-12
• python-imageio 2.33.0-8
• python-importlib-resources 6.1.1-10

Checklist

• Package was built and tested against unstable

[ermo]

LGTM, thanks!