Run clang-format and enable CI check for it (#755)

* pre-commit: Update and enable clang-format check

There is newer version from clang-format so use that. We do not yet want
18 as that is little bit too new.

* Format some thing by hand which clang-format "breaks"

Clang-format will format some things little bit off in some cases.
Format some things by hand so we get cleaner end result.

* Run clang-format with

```
pre-commit run --all-files clang-format
```

We have already in previously checked places where clang-format does not
make good format and ignored those (hopefully most of the things).

---------

Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>

ports/arduino_uno/uart.h

@@ -17,9 +17,8 @@ extern "C" {
 #endif /* __cplusplus */
 
 void uart_init(void);
-void uart_putchar(char c,
-    FILE * stream);
-char uart_getchar(FILE * stream);
+void uart_putchar(char c, FILE *stream);
+char uart_getchar(FILE *stream);
 
 #ifdef __cplusplus
 }