LRU Cache and Timed Cache avoiding GIL a in memory cache solution

[cirospaciari]

Add cache options, LRU with maxsize or Cache with duration. When cached headers, status code and body should be cached on C++ and never touch Python again when cached.

Should be implemented after the router decorator: #59

from socketify import App
app = App()
router = app.router()

@router.get("/lru", lru_cache=128) #If LRU True default value is set (128)
def lru(res, req):
   res.end("Hello World!")

router = app.router(lru_cache=128)
@router.get("/lru_2") #If LRU is passed on router, so any route of this router is cached with lru
def lru2(res, req):
   res.end("Hello World!")

@router.get("/cache", cache=30) #If cache is provided the expiration will be in seconds (30s in this cache)
def cache2(res, req):
   res.end("Hello World!")


router = app.router(cache=30, cache_ignores_query=True) # cache_ignores_query default is False
@router.get("/cache2") #If Cache is passed on router, so any route of this router is cached with cache
def cache2(res, req):
   res.end("Hello World!")
   
 # cache, lru_cache and cache_ignores_query should be available in the app router and MiddlewareRouter too
app.get("/test", lambda res, req: res.end("xablau"), cache=30)

Cache should synchronize all requests (only 1 request should be processed at a time, all other requests are queued and responded to with the cached content)
Cache should use URL or fullurl and be route independent (get/post/any etc)

• Create LRU Cache system using C++
• Create Timed Cache System using C++ and libuv
• Support cache_ignores_query in LRU and Timed Cache
• Support cache helper in the default Router
• Support cache helper in MiddlewareRouter
• Support cache helper in decorator routers
• Create Documentation