Add mlperf and fmwork parser

[sunya-ch]

This PR introduces two new parsers: mlperf and fmwork.

> go test -v parser/mlperf_test.go
=== RUN   TestParseValue
Values: map[50.00 percentile latency (ns):1.7262256186e+10 90.00 percentile latency (ns):1.9659521727e+10 95.00 percentile latency (ns):2.0100803434e+10 97.00 percentile latency (ns):2.0256134523e+10 99.00 percentile latency (ns):2.0441735627e+10 99.90 percentile latency (ns):2.0531572606e+10 Max latency (ns):2.0531572606e+10 Mean latency (ns):1.6889626007e+10 Min latency (ns):1.2087032686e+10 Samples per second:1196.99]
--- PASS: TestParseValue (0.00s)
=== RUN   TestGetPerformanceValue
PKey: Samples per second, Pvalue: 1196.99
--- PASS: TestGetPerformanceValue (0.00s)
PASS
ok  	command-line-arguments	1.209s

 > go test -v parser/fmwork_test.go
=== RUN   TestParseValue
Values: map[Tokens per iteration:2 avg ms/token:17.369209871 avg s/iter:0.03473842 avg seqs/s:28.786571393 avg tokens/s:57.573142786 max ms/token:579.050555 max s/iter:1.15810111 max seqs/s:0.863482464 max tokens/s:1.726964928 med ms/token:15.91811675 med s/iter:0.031836234 med seqs/s:31.410750898 med tokens/s:62.821501796 min ms/token:15.857538 min s/iter:0.031715076 min seqs/s:31.530745819 min tokens/s:63.061491639 p95 ms/token:16.045740625 p95 s/iter:0.032091481 p95 seqs/s:31.16091751 p95 tokens/s:62.32183502 std s/iter:0.056241701]
--- PASS: TestParseValue (0.00s)
=== RUN   TestGetPerformanceValue
PKey: p95 s/iter, Pvalue: 0.03
--- PASS: TestGetPerformanceValue (0.00s)
PASS
ok  	command-line-arguments	0.120s

Signed-off-by: Sunyanan Choochotkaew [email protected]