feat: support separated path match in ratelimit path

[kkk777-7]

What this PR does / why we need it:
Support PathSeparatedPrefix match in rate limit path match.

envoy ratelimit HeaderMatcher doesn't support PathSeparatedPrefix.
so use regex to achieve the same path-separated prefix behavior.

References

docs
https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/route/v3/route_components.proto#config-route-v3-routematch

If specified, the route is a path-separated prefix rule meaning that the :path header (without the query string) must either exactly match the path_separated_prefix or have it as a prefix, followed by /

For example, /api/dev would match /api/dev, /api/dev/, /api/dev/v1, and /api/dev?param=true but would not match /api/developer

Expect the value to not contain ? or # and not to end in /

impl
https://github.com/envoyproxy/envoy/blob/main/source/common/router/config_impl.cc#L1476-L1491

Which issue(s) this PR fixes:

Fixes #7377

Release Notes: No

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.37%. Comparing base (3ac9120) to head (7ff71cb).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7413      +/-   ##
==========================================
+ Coverage   72.31%   72.37%   +0.05%     
==========================================
  Files         231      231              
  Lines       33970    33979       +9     
==========================================
+ Hits        24566    24592      +26     
+ Misses       7634     7619      -15     
+ Partials     1770     1768       -2     

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[arkodg]

LGTM thanks !

[kkk777-7]

/retest