Add UpscaleFilter to SVE microbenchmark

[ylpoonlg]

Adds the upscale filter function to SVE benchmark.

Performance Results

Run on Neoverse-V2

Method	Size	Mean	Error	StdDev	Median	Min	Max	Allocated
Scalar	15	12.632 ns	0.0797 ns	0.0706 ns	12.595 ns	12.577 ns	12.775 ns	-
Vector128UpscaleFilter	15	13.011 ns	0.0286 ns	0.0223 ns	13.001 ns	12.995 ns	13.067 ns	-
Sve2UpscaleFilter	15	2.445 ns	0.0012 ns	0.0011 ns	2.445 ns	2.444 ns	2.447 ns	-
Scalar	127	127.955 ns	0.1336 ns	0.1250 ns	127.912 ns	127.802 ns	128.170 ns	-
Vector128UpscaleFilter	127	25.346 ns	0.0258 ns	0.0228 ns	25.350 ns	25.298 ns	25.387 ns	-
Sve2UpscaleFilter	127	31.288 ns	0.0219 ns	0.0205 ns	31.296 ns	31.248 ns	31.310 ns	-
Scalar	527	517.358 ns	0.2587 ns	0.2020 ns	517.276 ns	517.211 ns	517.779 ns	-
Vector128UpscaleFilter	527	77.554 ns	0.0861 ns	0.0805 ns	77.536 ns	77.457 ns	77.692 ns	-
Sve2UpscaleFilter	527	133.633 ns	0.0597 ns	0.0558 ns	133.632 ns	133.511 ns	133.706 ns	-
Scalar	10015	9,750.171 ns	29.3132 ns	22.8859 ns	9,740.865 ns	9,738.636 ns	9,816.282 ns	-
Vector128UpscaleFilter	10015	1,314.405 ns	0.2221 ns	0.1734 ns	1,314.380 ns	1,314.190 ns	1,314.665 ns	-
Sve2UpscaleFilter	10015	2,565.316 ns	0.2775 ns	0.2167 ns	2,565.276 ns	2,564.971 ns	2,565.705 ns	-

cc @dotnet/arm64-contrib @SwapnilGaikwad @LoopedBard3

[Copilot]

Pull request overview

Adds a new Arm64 SVE microbenchmark that measures an upscale filter implementation across scalar, AdvSimd (Vector128), and SVE2 code paths, and updates the microbenchmark project file to only compile this new SVE2 benchmark on TFMs that support the required intrinsics APIs.

Changes:

• Added UpscaleFilter SVE benchmark with Scalar, Vector128, and SVE2 implementations plus result verification.
• Updated MicroBenchmarks.csproj to exclude UpscaleFilter.cs for target frameworks older than net10.0.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/benchmarks/micro/sve/UpscaleFilter.cs	New SVE benchmark implementing and validating an upscale filter with multiple SIMD paths.
src/benchmarks/micro/MicroBenchmarks.csproj	Adds TFM-conditional compilation to exclude the new SVE2 benchmark on TFMs < net10.0.

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