Auto merge of #106458 - albertlarsan68:move-tests, r=jyn514

Move src/test to the root

See MCP at rust-lang/compiler-team#573

There may be more changes needed.

The first commit is just the move of the files:
You can check that the first commit did not do anything else than renames by running
```
git diff --diff-filter=r -M100% <rust-lang remote>/master <first commit hash>
```
The output should be empty, because the filter excludes renames, and the match threshold for qualifying a rename is 100%.

The second one is mostly a "find and replace" of `src/test` to `tests` and whatever is needed to make CI pass.

What is left to do:
---

- [x] Move directory
- [ ] Change references to `src/test`
    - [x] Change references in-tree
    - [ ] Change references in submodules / out-of-tree docs
- [x] Make CI pass:
    - [x] Fix tidy
    - [x] Fix tests
    - [x] Bless tests if needed (shouldn't normally)
- [ ] Merge it !

1 files changed, 0 insertions, 31 deletions

diff --git a/src/test/ui/const-generics/const-param-in-async.rs b/src/test/ui/const-generics/const-param-in-async.rs
deleted file mode 100644
index f823431e69b..00000000000
--- a/src/test/ui/const-generics/const-param-in-async.rs
+++ /dev/null
@@ -1,31 +0,0 @@
-// edition:2018
-// check-pass
-
-async fn foo<const N: usize>(arg: [u8; N]) -> usize { arg.len() }
-
-async fn bar<const N: usize>() -> [u8; N] {
-    [0; N]
-}
-
-trait Trait<const N: usize> {
-    fn fynn(&self) -> usize;
-}
-impl<const N: usize> Trait<N> for [u8; N] {
-    fn fynn(&self) -> usize {
-        N
-    }
-}
-async fn baz<const N: usize>() -> impl Trait<N> {
-    [0; N]
-}
-
-async fn biz<const N: usize>(v: impl Trait<N>) -> usize {
-    v.fynn()
-}
-
-async fn user<const N: usize>() {
-    let _ = foo::<N>(bar().await).await;
-    let _ = biz(baz::<N>().await).await;
-}
-
-fn main() { }