.clang-format: increase indent width

This significantly increases readability. This patch is pretty big so it is being done after mostly everything has settled.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/outcome/shim-signal.h

@@ -2,10 +2,10 @@
 
 /* see shim.go for documentation */
 typedef enum {
-  HAKUREI_SHIM_EXIT_REQUESTED,
-  HAKUREI_SHIM_ORPHAN,
-  HAKUREI_SHIM_INVALID,
-  HAKUREI_SHIM_BAD_PID,
+    HAKUREI_SHIM_EXIT_REQUESTED,
+    HAKUREI_SHIM_ORPHAN,
+    HAKUREI_SHIM_INVALID,
+    HAKUREI_SHIM_BAD_PID,
 } hakurei_shim_msg;
 
 void hakurei_shim_setup_cont_signal(pid_t ppid, int fd);