extension name and version globally

[#1]

it would be nice if there is a way to fetch information about installed extensions. what I think of is having some data available (by default) about every extension installed.

basically, I would love to have access to the following information about each extension:

- name (friendly name)

- id (or some other unique identifier)

- version

- publish date

having this information could be used in several ways:

a) write information in a custom prop for reporting

b) use reporting information for better reporting/segmenting data

c) add checks if single extensions or combinations of extensions are installed and throw errors in dev/staging (quality check while developing)

d) run certain code only if a specific extension is installed and has a defined version number