feat: Include version in startup message

[jcw-]

Check List

• Tests has been run in packages where changes made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

Description of Changes Made (if issue reference is not provided)

Includes the Cube.js version in the startup message:

The version is available in three places:

1. CubejsServer.version()
2. CubejsServerCore.version()
3. const { version, port } = await cubejsServer.listen();

[jcw-]

@paveltiunov curious what you think about doing something like this so the version is more discoverable (and also logged)? If this makes sense then I'll proceed to update the docs, examples, and guide content with the same change.

[paveltiunov]

@jcw- Hey Jc! I think it's good idea! It would be great to move this version retrieval to method of server instance.

[codecov-io]

Codecov Report

Merging #615 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #615   +/-   ##
=======================================
  Coverage   80.69%   80.69%           
=======================================
  Files          40       40           
  Lines        3316     3316           
=======================================
  Hits         2676     2676           
  Misses        640      640           

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[paveltiunov]

@jcw- Hey Jc! Looks good! We'd need just to resolve conflicts before merge. Could you please rebase your branch?

[jcw-]

@paveltiunov conflicts resolved!