[SPIRV][HLSL] Add clamp intrinsic lowering

[farzonl]

Add an intrinsic like this one from https://github.com/llvm/llvm-project/blob/cfb86ae7497e43e9221ab890221789ae320381e9/llvm/include/llvm/IR/IntrinsicsDirectX.td#L25C1-L26C118
to

llvm-project/llvm/include/llvm/IR/IntrinsicsSPIRV.td

Line 59 in 1e6ce5e

def int_spv_all : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_any_ty]>;

update the clamp.hlsl unit tests:
https://github.com/llvm/llvm-project/blob/1e6ce5e284f5c0e8d64eee21af727bb164eb3caf/clang/test/CodeGenHLSL/builtins/clamp.hlsl

and implement the three Clamp Lowering:
https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#FClamp
https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#UClamp
https://registry.khronos.org/SPIR-V/specs/1.0/GLSL.std.450.html#SClamp

[damyanp]

Need resolution to #87367.

[damyanp]

@bogner - this work item is specifically about the SPIR-V implementation. Please file an issue to track doing clamp generically if we still want to do that.