QA: make implicit imports explicit (no_implicit_imports)

The QA group (run_qa, ExplicitImports v1.6 form) currently marks
check_no_implicit_imports as ei_broken = (:no_implicit_imports,) because the
module relies on many implicit imports brought in by heavy using of several
deps. Making every name explicit at once is a large, risky refactor, so it is
tracked here and the check runs as @test_broken until resolved.

Implicit imports reported by ExplicitImports.check_no_implicit_imports(ParallelParticleSwarms):

• ForwardDiff: ForwardDiff
• KernelAbstractions: KernelAbstractions, @groupsize, @index, @kernel, @localmem, @private, @synchronize, @uniform, CPU, get_backend
• LineSearch: LineSearch, StrongWolfeLineSearch
• Optimization: Optimization
• PrecompileTools: PrecompileTools, @compile_workload, @setup_workload
• QuasiMonteCarlo: QuasiMonteCarlo, LatinHypercubeSample
• Reexport: Reexport, @reexport
• Setfield: Setfield, @set!
• SimpleNonlinearSolve: SimpleNonlinearSolve, SimpleBroyden, SimpleLimitedMemoryBroyden
• ADTypes: AutoEnzyme, AutoForwardDiff
• NonlinearSolveBase: NonlinearSolveBase
• SciMLBase: OptimizationFunction, OptimizationProblem, SciMLBase, reinit!, remake
• CommonSolve: init, solve, solve!
• StaticArrays: StaticArrays, @SArray
• StaticArraysCore: MVector, SArray, SVector

Resolution path: replace bare using <Dep> with explicit using <Dep>: name1, name2, ...
for each dep above, then drop :no_implicit_imports from ei_broken in
test/qa/qa.jl. The @test_broken auto-flags as an unexpected pass once the check is clean.

Start by running the QA group with ExplicitImports v1.6 and inspect test/qa/qa.jl, especially the ei_broken entry and @test_broken check. Replace each dependency's bare using with the explicit names listed in the issue. Done means check_no_implicit_imports(ParallelParticleSwarms) is clean and :no_implicit_imports is removed from ei_broken.