Adds following expressions:

HTTP request result using POST method

Returns the result of a POST method sent to the given address with the given parameters.
ex: result of http post "sqript.fr" with values (dictionary with [["username\","nico-"],["password",314159268]]
pattern: [result of] http post [to] {string} [with values {nbttagcompound|dictionary|string}]

HTTP request result using GET method

Returns the result of a GET method sent to the given address with the given headers.
ex: result of http post "sqript.fr" with headers (dictionary with [["username","nico-"],["password",314159268]]
pattern: [result of] http get [from] {string} [with header[s] {dictionary}]