CLDR-5854 First attempt with examples for two cases per item

[haytenf]

CLDR-5854

Locale	Before	After
cy
cy
cy
cy
cy
ro
ro
ro		(future-few)
ro
it
it

• [ ] This PR completes the ticket.

ALLOW_MANY_COMMITS=true

[haytenf]

@macchiati @srl295 This is just an initial attempt at the ticket based on my understanding. It doesn't fully cover the context/casing purpose (which might need to be split out into a separate ticket). If you take a look at the example screenshots in the markdown table (specifically the images for Romanian), there are two reasons I'm noticing why it won't cover the context/casing side:

1. simple date format produces the date appropriately lowercased for Romanian, which is then formatted with the relative item, so the middle-of-sentence capitalization issue doesn't arise

2. the pattern I use for some of the examples is MMMMd, and when formatted using the rules for Romanian d comes first, so the capitalization becomes irrelevant

In terms of just getting examples in for the relative items, it might still be a starting point. I still need to get a few more tests in and clean up the code but wanted to get feedback design wise.

[haytenf]

@macchiati @srl295 This is just an initial attempt at the ticket based on my understanding. It doesn't fully cover the context/casing purpose (which might need to be split out into a separate ticket). If you take a look at the example screenshots in the markdown table (specifically the images for Romanian), there are two reasons I'm noticing why it won't cover the context/casing side:

1. simple date format produces the date appropriately lowercased for Romanian, which is then formatted with the relative item, so the middle-of-sentence capitalization issue doesn't arise
2. the pattern I use for some of the examples is MMMMd, and when formatted using the rules for Romanian d comes first, so the capitalization becomes irrelevant

In terms of just getting examples in for the relative items, it might still be a starting point. I still need to get a few more tests in and clean up the code but wanted to get feedback design wise.

@btangmu @srl295 @macchiati Just wanted to follow up and see if anyone has any input about the new examples from this.