Wip chunked decoding

+ Need to test normal body parsing
+ path_is_valid() renamed eval_file_type()
+ replaced atoi with strtol/strtoul

test_chunk.txt

@@ -0,0 +1,15 @@
+https://en.wikipedia.org/wiki/Chunked_transfer_encoding#Example
+https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Transfer-Encoding
+
+GET / HTTP/1.1
+Host: localhost:4040
+Accept: */*
+Transfer-Encoding: chunked
+
+7
+Mozilla
+9
+Developer
+7
+Network
+0