Cleanup includes

Improved manually with the help of neovim LSP warnings and iwyu:

    iwyu -Ibuilddir/app/ -Iapp/src/ app/src/XXX.c

app/src/adb/adb.c

@@ -4,9 +4,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
 
-#include "adb_device.h"
-#include "adb_parser.h"
+#include "adb/adb_device.h"
+#include "adb/adb_parser.h"
 #include "util/env.h"
 #include "util/file.h"
 #include "util/log.h"

app/src/adb/adb.h

@@ -6,7 +6,7 @@
 #include <stdbool.h>
 #include <inttypes.h>
 
-#include "adb_device.h"
+#include "adb/adb_device.h"
 #include "util/intr.h"
 
 #define SC_ADB_NO_STDOUT (1 << 0)

app/src/adb/adb_device.h

@@ -4,7 +4,6 @@
 #include "common.h"
 
 #include <stdbool.h>
-#include <stddef.h>
 
 #include "util/vector.h"
 

app/src/adb/adb_parser.c

@@ -3,6 +3,7 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
 
 #include "util/log.h"
 #include "util/str.h"

app/src/adb/adb_parser.h

@@ -3,9 +3,9 @@
 
 #include "common.h"
 
-#include <stddef.h>
+#include <stdbool.h>
 
-#include "adb_device.h"
+#include "adb/adb_device.h"
 
 /**
  * Parse the available devices from the output of `adb devices`

app/src/adb/adb_tunnel.c

@@ -1,11 +1,11 @@
 #include "adb_tunnel.h"
 
 #include <assert.h>
+#include <inttypes.h>
 
-#include "adb.h"
+#include "adb/adb.h"
 #include "util/log.h"
 #include "util/net_intr.h"
-#include "util/process_intr.h"
 
 static bool
 listen_on_port(struct sc_intr *intr, sc_socket socket, uint16_t port) {