docs: add RFC for enhanced dependsOn syntax

[branchseer]

Summary

• Proposes two styles for enhanced dependsOn entries that reuse the existing vp run CLI mental model instead of inventing new symbols
• Style 1 (CLI string): entries written as CLI args, e.g. "--transitive build", ["--filter", "@myorg/core", "build"]
• Style 2 (object): keys mirror CLI flag names, e.g. { "transitive": true, "task": "build" }

Test plan

• Review RFC content for correctness and completeness

🤖 Generated with Claude Code

[fengmk2]

+1 for "Object syntax"

[ubugeeei]

btw, what happens in this case when there’s a circular reference?

[kazupon]

btw, what happens in this case when there’s a circular reference?

I think Error::CycleDependencyDetected will be occured.

[branchseer]

btw, what happens in this case when there’s a circular reference?

Yes Error::CycleDependencyDetected:

vite-task/crates/vite_task_bin/tests/e2e_snapshots/fixtures/error_cycle_dependency/snapshots/cycle dependency error.snap

Line 6 in f9a4f39

Error: Cycle dependency detected: error-cycle-dependency-test#task-a -> error-cycle-dependency-test#task-b -> error-cycle-dependency-test#task-a