dev/release#17 - Synchronize version#s for core and core-extensions

[totten]

Overview

This simplifies the management of version-numbers for core extensions.

See also: https://lab.civicrm.org/dev/release/-/issues/17

Before

Each core-extension has its own version-number. These are often neglected (e.g. not incremented in tandem with the main release).

After

Whenever we update the version-number for civicrm-core, it will also update the version-numbers for each core extension.

Comments

Some core extensions are in an alpha/beta stage. Currently, for a user who browses the list of available extensions, the "Version" column signals this. However, if the version-numbers are sync'd, then this will no longer provide that signal.

A parallel PR (#20302) updates the extension UI so that the <develStage> is communicated more effectively.

ping @colemanw

[civibot]

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[colemanw]

Good change!