feat(gnodev): native package loader

[gfanton]

Deprecate -resolver flags in favor of the latest native package loader of gnovm.

Adds a new -load flag to gnodev with three loading modes to give users control over package loading behavior:

• auto (default): Pre-loads only the current workspace/package. If running from the examples folder, falls back to lazy loading.
• lazy: Loads packages on-demand as they're accessed via queries or transactions.
• full: Pre-loads all discovered packages upfront.

[Gno2D2]

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[codecov[bot]]

Codecov Report

:x: Patch coverage is 28.70370% with 154 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
contribs/gnodev/pkg/packages/loader_native.go	13.91%	99 Missing :warning:
contribs/gnodev/pkg/packages/index.go	11.11%	32 Missing :warning:
contribs/gnodev/pkg/packages/package.go	52.63%	9 Missing :warning:
contribs/gnodev/pkg/dev/node.go	62.50%	4 Missing and 2 partials :warning:
contribs/gnodev/pkg/packages/mock_loader.go	71.42%	4 Missing and 2 partials :warning:
contribs/gnodev/pkg/proxy/path_interceptor.go	77.77%	2 Missing :warning:

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