Fix CSV dependency in LinearSolveAutotune

Add missing CSV dependency to resolve UndefVarError when creating
benchmark result files. The telemetry system uses CSV.write() to
create system_info.csv files but CSV wasn't imported.

Changes:
- Add CSV dependency to Project.toml
- Add CSV import to LinearSolveAutotune.jl
- Add CSV compatibility constraint

Fixes CSV not defined error in telemetry.jl:426

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: ChrisRackauckas

lib/LinearSolveAutotune/Project.toml

@@ -6,6 +6,7 @@ version = "0.1.0"
 [deps]
 LinearSolve = "7ed4a6bd-45f5-4d41-b270-4a48e9bafcae"
 BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"
+CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 GitHub = "bc5e4493-9b4d-5f90-b8aa-2b2bcaad7a26"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
@@ -28,6 +29,7 @@ Metal = "dde4c033-4e86-420c-a63e-0dd931031962"
 [compat]
 LinearSolve = "3"
 BenchmarkTools = "1"
+CSV = "0.10"
 DataFrames = "1"
 GitHub = "5"
 Plots = "1"

lib/LinearSolveAutotune/src/LinearSolveAutotune.jl

@@ -2,6 +2,7 @@ module LinearSolveAutotune
 
 using LinearSolve
 using BenchmarkTools
+using CSV
 using DataFrames
 using PrettyTables
 using Preferences