Add decodeManifest method to ManifestCoder

Description

This pull request adds a new method decodeManifest to the ManifestCoder class. This method allows decoding of POLO encoded manifests into their JSON equivalent, addressing the current lack of this feature in the library.

closes #90

Changes

Added decodeManifest method to ManifestCoder class
Added a enum ManifestFormat for various formats of manifest.
Update import/exports of js-moi-manifest

Implementation Details

The decodeManifest method takes a POLO encoded manifest (either as a hex string or Uint8Array) and its format as input, and returns a LogicManifest.Manifest object. It includes input validation and error handling for invalid manifests or unsupported formats.

Example

const manifest = `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`;
const decoded = ManifestCoder.decodeManifest(manifest, ManifestFormat.JSON);

console.log(JSON.stringify(decoded, null, 4)); // >> { syntax: 1, engine: { kind: "PISA", flags: [] }, elements: [...] }

Changes include

[ ] Bugfix (non-breaking change that solves an issue)
[X] New feature (non-breaking change that adds functionality)
[ ] Breaking change (change that is not backwards-compatible and/or changes current functionality)

Checklist

[X] I have assigned this PR to myself
[X] I have added at least 1 reviewer
[X] I have tested this code
[X] I have updated the README and other relevant documents (guides...)

Latest commit:	`418560c`
Status:	✅ Deploy successful!
Preview URL:	https://890df1e5.js-moi-sdk.pages.dev
Branch Preview URL:	https://feat-90-decode-polo-hex-json.js-moi-sdk.pages.dev

sarvalabs / js-moi-sdk

feat: add `decodeManifest` method to `ManifestCoder` #91