New aligment for x axis ticks

[Talla2XLC]

Feature Proposal

In case if chart have only 2 ticks on horizontal axis many users preffer to aling this ticks: 'start" for first (left) tick and 'end' for last (right) tick, otherwise they will go out of bounds:

To do so I modified chart,js core adding new align type for options.scales['x'].ticks namespace which named 'left-right'.

I am ready to upload this correction via pull request if you don`t mind

Possible Implementation

Adding new align type 'left-right' for options.scales['x'].ticks namespace described in pull request: #10105

[etimberg]

Done in #10106