Added documentation for some functions and methods.

[psg-19]

I've submitted a PR to address this issue: #109
Tried documenting some of functions and methods.

[oleonardolima]

Thank you for working on this one!

I'd suggest: i) fixing some typos regarding the proper use of Rust's docstrings (i.e.: missing whitespace on /// Start...), checking the rustdoc book for more info see; ii) covering the documentations of more missing items to make the PR more substantial.

[psg-19]

fixed typos and added documentation to more public functions, methods, structs and traits I could find.
Please let me know if anything more needs to be done.

[coveralls]

Pull Request Test Coverage Report for Build 14520630096

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 88.149%

---

Files with Coverage Reduction	New Missed Lines	%
src/api.rs	1	53.03%

Totals
Change from base Build 13912069194:	-0.02%
Covered Lines:	1138
Relevant Lines:	1291

---

💛 - Coveralls

[oleonardolima]

You can squash the changes into a single commit, and use the conventional commits terminology, e.g docs: add missing documentation.

Also, there are still some formatting issues, see the CI output, you can run cargo fmt --all --check locally to make sure it's all sound before pushing to remote.

[psg-19]

made the required changes, can you review it once.

[notmandatory]

@psg-19 your documentation should follow the recommended format from the docs here:
https://doc.rust-lang.org/stable/rustdoc/how-to-write-documentation.html#documenting-components

In particular start with a concise summary. For these that's all that may be needed. But if more details are needed put those on a following paragraph or lines. It's OK to borrow wording from other projects like rust-bitcoin. For example:
https://docs.rs/bitcoin/latest/bitcoin/struct.TxOut.html