stream: Implement TextStreamFormat

[german77]

This is a continuation of the previous PR #237. This implements the string format side of yaml files.

This code has a couple of mismatches.
TextStreamFormat::readBit. This function parses the "0b110011" string by chopping off the "0b" part and parsing each char as 0 or 1. However I couldn't make the compiler follow the same flow. https://decomp.me/scratch/PKNGF Fixed uses iterators

TextStreamFormat::writeMemBlock This function converts the data into a base64 string. I suspect the length calculation is not properly done.https://decomp.me/scratch/Xzhbw

TextStreamFormat::getNextData_ This function actually reads the text file and selects the next field of data. The file supports multiple types of comments "", # and /* */. This has a lot of string related inlines in it, this made the logic very complex, I struggled getting even a meaningful level of match 0-40% after finally understanding the logic and several rewrites the match improved to 93% https://decomp.me/scratch/6wcQg

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This change is 

[german77]

Something important to note. While fixing TextStreamFormat::readBit I found that the end iterator includes the string terminator. I didn't notice any negative effects from this change so I'm probably the first one to use it.

TextStreamFormat::writeMemBlock apparently matches on botw I was confusing the BinaryStreamFormat