Converts modpack.json dependencies format to include version information

[nickesc]

Swaps the list version of the dependencies for an object. Similar pattern to package.json dependencies. Moves the old version to a supported "legacy" format, which can be converted to the new format using the publicly exposed normalizeDependencies function.

• Better diffing (don't have to rely on the modpack.lock for version changes anymore)
• Potentially breaking changes for those using modpack-lock as a library or relying on the current Jsonfile shape

Also adds explicit api timeout for modrinth requests

[nickesc]

This is a breaking change! But will be a much better experience for modpack developers. Willing to make the change, especially while we are still <1.0.0. If anyone runs into problems that they feel should be addressed at the library level, please create an issue.

Otherwise, use the new normalizeDependencies function to convert old modpack.json dependencies objects to the new format.

[nickesc]

Looks good. merge and release a new version