[RRFC] Add semver filter to the outdated command

Motivation ("The Why")

I was managing a repository and wanted to see if there were any new major releases in the dependencies. I was interested only to major releases changes but the npm outdated command showed to me also minor and patch changes.

Example

Allow to show only some specific type of semver changes, eg: only major and minor.

How

Current Behaviour

The npm outdated command shows all dependencies with an update

Desired Behaviour

Allow to specify a filter parameter like --include-versions that takes as input a string or a list of comma-separated strings.

Example:

npm outdated

Package      Current          Wanted        Latest
dep1         1.0.1            1.0.1         1.1.0
dep2         3.2.122          3.2.122       4.0.0
dep1         0.0.1            0.0.1         0.0.2


npm outdated --include-versions major,minor

Package      Current          Wanted        Latest
dep1         1.0.1            1.0.1         1.1.0
dep2         3.2.122          3.2.122       4.0.0

References

• n/a

Start with the npm outdated command and the semver behavior described in the issue. Determine where its output and version comparisons are handled; no files or tests are named in the proposal. Done means a filter such as --include-versions can select major and minor updates while excluding patch-only updates.