This PR refactors the HTTP routing system by renaming "hijack"
terminology to "dynamic match" for improved code clarity and better
semantic meaning.
Interface and Class Renaming
* ISrsHttpMatchHijacker → ISrsHttpDynamicMatcher
* hijack() method → dynamic_match() method
* hijackers member variables → dynamic_matchers_
Method Renaming
* SrsHttpServeMux::hijack() → SrsHttpServeMux::add_dynamic_matcher()
* SrsHttpServeMux::unhijack() →
SrsHttpServeMux::remove_dynamic_matcher()
The new "dynamic match" terminology better reflects that this is a
legitimate routing mechanism, not a security bypass or interception.
0d6d36d1fb
