This cl does the following things:

0) Implements a skeleton of incident_helper
1) Implements FileSection class which calls incident_helper to parse
   file content to protobuf
2) Adds Kernel Wake Sources to incident.proto and makes it parsed by
   FileSection
3) Adds basic gtests to test FdBuffer, io_utils, FileSection
implementation

Bug: 62923266
Bug: 62926061
Test: manual - push incidentd, incident_helper and incident to my device
      and verify kernel wakeup sources file is able to be parsed.
Change-Id: I2aa6b6158d962ce70e6fa6c8a9c42213a45ff41c
diff --git a/cmds/incidentd/src/protobuf.cpp b/cmds/incidentd/src/protobuf.cpp
index cb864fd..a703ef9 100644
--- a/cmds/incidentd/src/protobuf.cpp
+++ b/cmds/incidentd/src/protobuf.cpp
@@ -16,7 +16,7 @@
 
 #include "protobuf.h"
 
-uint8_t*
+uint8_t* 
 write_raw_varint(uint8_t* buf, uint32_t val)
 {
     uint8_t* p = buf;
@@ -31,7 +31,7 @@
     }
 }
 
-uint8_t*
+uint8_t* 
 write_length_delimited_tag_header(uint8_t* buf, uint32_t fieldId, size_t size)
 {
     buf = write_raw_varint(buf, (fieldId << 3) | 2);