tint->dawn: Shuffle source tree in preperation of merging repos

docs/    -> docs/tint/
fuzzers/ -> src/tint/fuzzers/
samples/ -> src/tint/cmd/
src/     -> src/tint/
test/    -> test/tint/

BUG=tint:1418,tint:1433

Change-Id: Id2aa79f989aef3245b80ef4aa37a27ff16cd700b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/80482
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

test/tint/vk-gl-cts/graphicsfuzz/assign-array-value-to-another-array/0-opt.wgsl

@@ -0,0 +1,94 @@
+var<private> x_GLF_color : vec4<f32>;
+
+fn func_i1_(x : ptr<function, i32>) {
+  var a : i32;
+  var data : array<i32, 9>;
+  var temp : array<i32, 2>;
+  var i : i32;
+  var x_95 : bool;
+  var x_96_phi : bool;
+  a = 0;
+  data[0] = 5;
+  loop {
+    let x_56 : i32 = a;
+    let x_57 : i32 = *(x);
+    if ((x_56 <= x_57)) {
+    } else {
+      break;
+    }
+    let x_60 : i32 = a;
+    if ((x_60 <= 10)) {
+      let x_64 : i32 = a;
+      let x_66 : i32 = a;
+      let x_69 : i32 = data[min(x_66, 0)];
+      temp[min(x_64, 1)] = x_69;
+      let x_71 : i32 = a;
+      a = (x_71 + 1);
+    }
+  }
+  i = 0;
+  loop {
+    let x_77 : i32 = i;
+    if ((x_77 < 2)) {
+    } else {
+      break;
+    }
+    let x_80 : i32 = i;
+    let x_82 : i32 = temp[0];
+    let x_83 : i32 = i;
+    data[x_80] = (x_82 + x_83);
+
+    continuing {
+      let x_86 : i32 = i;
+      i = (x_86 + 1);
+    }
+  }
+  let x_89 : i32 = data[0];
+  let x_90 : bool = (x_89 == 5);
+  x_96_phi = x_90;
+  if (x_90) {
+    let x_94 : i32 = data[1];
+    x_95 = (x_94 == 6);
+    x_96_phi = x_95;
+  }
+  let x_96 : bool = x_96_phi;
+  if (x_96) {
+    x_GLF_color = vec4<f32>(1.0, 0.0, 0.0, 1.0);
+  } else {
+    x_GLF_color = vec4<f32>(0.0, 0.0, 0.0, 0.0);
+  }
+  return;
+}
+
+fn main_1() {
+  var i_1 : i32;
+  var param : i32;
+  i_1 = 1;
+  loop {
+    let x_43 : i32 = i_1;
+    if ((x_43 < 6)) {
+    } else {
+      break;
+    }
+    let x_46 : i32 = i_1;
+    param = x_46;
+    func_i1_(&(param));
+
+    continuing {
+      let x_48 : i32 = i_1;
+      i_1 = (x_48 + 1);
+    }
+  }
+  return;
+}
+
+struct main_out {
+  @location(0)
+  x_GLF_color_1 : vec4<f32>;
+};
+
+@stage(fragment)
+fn main() -> main_out {
+  main_1();
+  return main_out(x_GLF_color);
+}