[MLIR][Vector] Implement DialectReductionPatternInterface using ODS

Description

Now that DialectReductionPatternInterface has moved to ODS ([#180640](https://github.com/llvm/llvm-project/pull/180640)), I'd like to implement it for the Vector dialect.

Since Vector is so critical for low-level lowering, having these reduction patterns will be a great help for mlir-reduce users.

Proposed Plan:

Register the interface in VectorOps.cpp.

Implement populateReductionPatterns.

Start with high-impact patterns like vector.broadcast simplification.

This will be my first contribution to MLIR.

CC: @aidint (since you handled the ODS migration, I'd love to get your thoughts or any tips for a first-timer on this interface).