Add fuzzy search to wperf list

[PrzemekWirkus]

Cloned from: https://linaro.atlassian.net/browse/WPERF-850

This ticket is for compatibility with Linux perf. In Linux perf when you specify e.g. $ perf list ld_spec command will output all matching events and metrics.

See example:

perf list ld_spec

List of pre-defined events (to be used in -e):



core imp def:
  ld_spec
       [Operation speculatively executed, load]
  rc_ld_spec
       [Release consistency operation speculatively executed, Load-Acquire]
  unaligned_ld_spec
       [Unaligned access, read]

We can keep WindowsPerf output format so that we can have JSONoutput for free. Example:

wperf list _ratio

List of supported metrics (to be used in -m)

        Metric                      Events
        ======                      ======
        branch_misprediction_ratio  {br_mis_pred_retired,br_retired}
        dtlb_walk_ratio             {dtlb_walk,l1d_tlb}
        itlb_walk_ratio             {itlb_walk,l1i_tlb}
        l1d_cache_miss_ratio        {l1d_cache,l1d_cache_refill}
        l1d_tlb_miss_ratio          {l1d_tlb,l1d_tlb_refill}
        l1i_cache_miss_ratio        {l1i_cache,l1i_cache_refill}
        l1i_tlb_miss_ratio          {l1i_tlb,l1i_tlb_refill}
        l2_cache_miss_ratio         {l2d_cache,l2d_cache_refill}
        l2_tlb_miss_ratio           {l2d_tlb,l2d_tlb_refill}
        ll_cache_read_hit_ratio     {ll_cache_miss_rd,ll_cache_rd}
        ll_cache_read_miss_ratio    {ll_cache_miss_rd,ll_cache_rd}