docs(standard): make genericName optional and deprecate it

[bfabio]

genericName doesn't really fit software outside Desktop environments
and is often misused in practice. Also, we don't offer any controlled vocabulary
for generic names.

The 'shortDescription' and 'name' keys are good enough.

Fix #59.

[bfabio]

@yaml-9000 deprecation-change
@yaml-9000 minor-change

[yaml-9000]

Thanks for your contribution 🙏

This is now marked as a minor-change proposal to the standard,
this means that old versions of publiccode.yml will still be valid with this change.

Example of minor changes are additions of new keys or making keys optional.

The Chair will eventually pick up this proposal and start the voting procedure using @yaml-9000 vote-start

cc @ruphy @publiccodeyml/steering-committee

_{📄 Voting procedure | 📄 Working Group Charter | 🤖 bot commands}

[yaml-9000]

Thanks for your contribution 🙏

This is now marked as a deprecation-change proposal to the standard, this means that this change won't break any compatibility with the old versions of the Standard,
and it will be possibile to make the definitive change 6 months after the deprecation with a new major release.

The Chair will eventually pick up this proposal and start the voting procedure using @yaml-9000 vote-start

cc @ruphy @publiccodeyml/steering-committee

_{📄 Voting procedure | 📄 Working Group Charter | 🤖 bot commands}

[ruphy]

@yaml-9000 vote-start

[yaml-9000]

Voting is now open on this proposal!

If you are a member of the Steering Committee you can now vote!

The polls will stay open for 14 days, until Wed, 27 Apr 2022 13:04:57 GMT.
At the end of that period the Chair (@ruphy) will mark the voting period as over using @yaml-9000 vote-end

Leave a 👍 (thumbs up) on this comment to accept the proposal or a 👎 (thumbs down) to reject it.

cc @publiccodeyml/steering-committee

_{📄 Voting procedure | 📄 Working Group Charter | 🤖 bot commands}

[ruphy]

@yaml-9000 vote-end

[yaml-9000]

Vote results

The results of the vote are:

Vote	Members	Votes count	Percentage
👍 Approve	@ruphy @bzg	2	100.0%
👎 Reject		0	-

Proposal approved 👍

This proposal is now ready to be merged and get released with a new version of the standard.

cc @ruphy @publiccodeyml/maintainers

_Details

First round: unanimity required

The following users voted (includes non-members of the steering committee):

• ruphy voted 👍

• bzg voted 👍

_{📄 Voting procedure | 📄 Working Group Charter | 🤖 bot commands}