feat: add `SparseMerkleClosestProof` proof type (pokt-network#27)

feat: add benchmarking suite (pokt-network#25)

[Minor] Expose `GetPathBit()` (pokt-network#15)

## Overview

This PR exposes `GetPathBit()` for use outside of the SMT repo

[Minor] Expose `GetPathBit()` (pokt-network#15)

## Overview

This PR exposes `GetPathBit()` for use outside of the SMT repo

[Cleanup] Initial documentation improvements and code cleanup (pokt-n…

…etwork#8)

## Overview

This PR addresses the lack of documentation in the repo by adding some
details to the `README.md` file and adds some more godoc comments
throughout the codebase.

The workflow files have been updated to a use go version 1.18 and have
been updated to fully test the repo and produce code coverage reports
and check against linters.

The legacy fuzzing has been removed and instead now uses go native
fuzzing, the fuzzing tests remain the same and can be improved upon in a
separate PR. The oss-fuzz build script has been removed until this repo
is on oss-fuzz a new script will not be made.

Additionally linter errors have been addressed.

## Issue

Fixes pokt-network#7 

Additional testing enhancements will be covered in a separate PR

## Checklist

- [x] Update any relevant README(s)
- [x] Add or update any relevant or supporting
[mermaid](https://mermaid-js.github.io/mermaid/) diagrams
- [ ] Task specific tests or benchmarks: go test ...
- [x] New tests or benchmarks: go test ...
- [x] All tests: go test -v

---------

Co-authored-by: Daniel Olshansky <[email protected]>

Update go (pokt-network#4)

* Update go and go mod tidy

* Replace celestiaorg with pokt-network

Remove changelog checker in favor of automatic on release. (#68)

Remove arm64 from test CI. (pokt-network#33)

Delete* and Has* functions

Initial version