feat(stdlibs): add encoding, encoding/{base32,binary,csv}

[notJoon]

• encoding
• encoding/base32
• encoding/binary
• encoding/csv : Due to the reflect does not implemented yet, skipped fuzz

---

1. encoding/asn1: better after reflection

related to:

• Gno Core Issue Tracker gnoswap-labs/gno#7
• [META] Standard Library wishlist #1267

depends-on:

• fix(gnovm): use strconv.UnquoteChar to parse rune literals #3296
• fix(gnovm): in op_binary, return typed booleans where appropriate #3298

[codecov]

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[thehowl]

converting to draft for now, mark as ready when it's done :)

full implementation of encoding/binary requires reflection; not sure what category I put it into but if you just do varint it should be good 👍

[notJoon]

@thehowl Thanks! I'll trying to finishing varint first 👍 👍

[notJoon]

The original test code encountered a segment fault. So, I converted the exmaple code in the package document to gno test code.

[moul]

don't forget to update the docs/ folder, thank you.

[notJoon]

@moul don't worry, I'll update together when it's done.

[notJoon]

Finally solved the base32 decoder part that wasn't working. Additionaly, I also added some use cases to validate the package's functionalities.

[thehowl]

@notJoon please fix tests :) (make _test.gnolang.stdlibs in gnovm, and run make fmt as well)

if you need any help ping me on signal

[Gno2D2]

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[thehowl]

PR is now ready, but depends on two other PRs to fix VM bugs which were causing problems in the tests

[ltzmaxwell]

start looking