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, 17 deletions

diff --git a/src/test/ui/macros/issue-99261.rs b/src/test/ui/macros/issue-99261.rs
deleted file mode 100644
index 40d26d08cba..00000000000
--- a/src/test/ui/macros/issue-99261.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-// check-pass
-
-#![deny(named_arguments_used_positionally)]
-
-fn main() {
-    let value: f64 = 314.15926;
-    let digits_before_decimal = 1;
-    let digits_after_decimal = 2;
-    let width = digits_before_decimal + 1 + digits_after_decimal;
-
-    println!(
-        "{value:0>width$.digits_after_decimal$}",
-        value = value,
-        width = width,
-        digits_after_decimal = digits_after_decimal,
-    );
-}