Handle oracle operation in FATE (#90)

* Handle oracle operation in FATE

Keep oracle type information on fcode level

Introduce typereps as values

Handle oracle registration

Handle oracle query object and oracle_query op

Handle oracle get question

Handle oracle query fee

Handle oracle get answer

Handle oracle respond

Handle oracle extend

* Address review comment

rebar.config

@@ -2,7 +2,7 @@
 
 {erl_opts, [debug_info]}.
 
-{deps, [ {aebytecode, {git, "https://github.com/aeternity/aebytecode.git", {ref, "506f9ca"}}}
+{deps, [ {aebytecode, {git, "https://github.com/aeternity/aebytecode.git", {ref,"e321882"}}}
        , {getopt, "1.0.1"}
        , {jsx, {git, "https://github.com/talentdeficit/jsx.git",
                      {tag, "2.8.0"}}}