simpleperf: format summary of annotate.py.

1. Use Texttable to format output in summary file.
2. Use 'Total/Self' in summary file, which is similar to report command
output.
3. Add --raw-period option to show raw periods instead percentages.

Bug: 204455134
Test: run scripts/test/test.py
Change-Id: I147995abc74db7eea6c62f21a0920f5a355e7b9f
7 files changed