Add One Dot Leader to long-press characters

When making a Talking Book, Bloom treats the period (U+002E) as sentence-ending punctuation.

But sometimes, periods are used mid-sentence, as in “Mr. Jones went to the party.” or this text from a book in Bloom Library “I am Detective Stick. You can call me D. Stick.”.

In these examples, the user doesn’t want these “periods” to cause a sentence break.

One possible answer is to use character U+2024, called “One Dot Leader”.

Since many users struggle to type Unicode characters, it would be great to have this character available as a long-press character.