refactor!: plugin hooks ssr param to object

[patak-dev]

Description

See discussion at #5109 (comment).

This PR modifies the way Vite informs ssr mode to plugin hooks from a positional param to a prop in the options object of resolveId, transform and load. This was already discussed by the team and the plugin authors.

export interface Plugin extends RollupPlugin {
    // ... other hooks
    resolveId?(this: PluginContext, source: string, importer: string | undefined, options: {
        custom?: CustomPluginOptions;
        ssr?: boolean;
    }): Promise<ResolveIdResult> | ResolveIdResult;
    load?(this: PluginContext, id: string, options?: {
        ssr?: boolean;
    }): Promise<LoadResult> | LoadResult;
    transform?(this: TransformPluginContext, code: string, id: string, options?: {
        ssr?: boolean;
    }): Promise<TransformResult> | TransformResult;
}

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

[brillout]

LGTM (Superficial review. Neat comprehensive docs update 👌.), and vite-plugin-ssr is not using server.pluginContainer.

[Shinigami92]

Do we want to release this with 2.7, or before?
You could add this PR to the milestone dependant on the answer 🙂

[patak-dev]

I didnt add it yet because I dont know if we are targetting 2.7 or 2.8. But given the way the ecosystem reacted, it is probably going to be in the next minor