Add index, columns, origin, development alternatives to Triangle.drop()

[genedan]

Description

index and columns parameters to Triangle.drop() are alternatives to specifying axis=0 and axis=1, respectively. We can extend this logic to having arguments origin and development be alternatives for axis=2 and axis=3, respectively.

Is your feature request aligned with the scope of the package?

• Yes, absolutely!
• No, but it's still worth discussing.
• N/A (this request is not a codebase enhancement).

Describe the solution you'd like, or your current workaround.

• Triangle.drop(index=['wkcomp', 'auto']) is equivalent to Triangle.drop(labels=['wkcomp', 'auto'], axis=0)
• Triangle.drop(columns=['paid', 'incurred']) is equivalent to Triangle.drop(labels=['paid', 'incurred'], axis=1)
• Triangle.drop(origin='1985') is equivalent to Triangle.drop(labels='1985', axis=2)
• Triangle.drop(development='12') is equivalent to Triangle.drop(labels='12', axis=3)

Do you have any additional supporting notes?

No response

Would you be willing to contribute this ticket?

• Yes, absolutely!
• Yes, but I would like some help.
• No.