Add build info to logs

[ronensc]

Issue link

What changes have been made

This PR adds a log line with the build version and build date of the CFO.
Knowing the build version and build date is useful when debugging historical logs and correlating them with the actual code that produced them.

build version format:

<tag>[-<sha>][-dirty]

<tag>: The name of the most recent tag (stripping the prefix 'v')
<sha>: If HEAD is not pointed to a tag, then the hash of HEAD is added.
dirty: If the repository contains any changes, "-dirty" is added.

Note: Once approved, I think it will be beneficial to add a similar PR to MCAD and will be happy to do that.

Verification steps

Build and run:

make build && ./bin/manager

The first log line should look like:

2023-11-13T17:27:45+02:00       INFO    setup   Build info      {"version": "1.0.0-7991ad5", "date": "2023-11-13 17:27"}

Running without make build should yield:

$ go run main.go
2023-11-13T17:53:52+02:00       INFO    setup   Build info      {"version": "UNKNOWN", "date": "UNKNOWN"}

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[ronensc]

cc @eranra @rachelt44

[astefanutti]

/lgtm

[astefanutti]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: astefanutti

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