Optimization of speed work

[vkatsuba]

Description

• Start persistent_term instead of ets
• Optimize function calls for use on accumulator

---

NEW

1> timer:tc(sheldon, check, [base64:encode(crypto:strong_rand_bytes(45))]).
{8693825,
 #{bazinga =>
       <<"I know the real reason you never made progress with that idea. You thought of it September 22nd 2007. Tw"...>>,
   misspelled_words =>
       [#{candidates => [],line_number => 1,
          word =>
              "AA9VaG90nSWUwdEQYs+lqTBZRU1vBaxjK7iU/1D3MIgm6FZjOHgF7OEgmlbq"}]}}

OLD

1> timer:tc(sheldon, check, [base64:encode(crypto:strong_rand_bytes(45))]).
=ERROR REPORT==== 4-Nov-2021::14:07:38.607430 ===
sheldon_suggestions_server:24 >> Error: badrpc
        Stack: [{rpc,check,2,[{file,"rpc.erl"},{line,1262}]},
                {sheldon_suggestions_server,suggestions,2,
                    ....
{15072132,
 #{bazinga =>
       <<"The correct animal for inter-species super soldier is the koala. You would wind up with an army so cute,"...>>,
   misspelled_words =>
       [#{candidates => [],line_number => 1,
          word =>
              "T91YJNeOhQ6ctDktj5UhGhQQ8IDDobdqHzhfinVaMxOllvxgfDel/xAH5unw"}]}}

NEW multi calls

1> LongWord = base64:encode(crypto:strong_rand_bytes(45)).
<<"sQ6ZvIjmxBrXhAod0CT3kXMPaKEjSg1KKnlh/gGddfnaeMteM1TRxYdFvpov">>
2> [begin {T, _} = timer:tc(sheldon, check, [LongWord]), T end || _ <- lists:seq(1, 10)].
[8506246,8419900,8042167,8373228,7911508,7964150,7685334,
 8231833,8165089,8113452]

OLD multi calls

1> LongWord = base64:encode(crypto:strong_rand_bytes(45)).
2> [begin {T, _} = timer:tc(sheldon, check, [LongWord]), T end || _ <- lists:seq(1, 10)].
=ERROR REPORT==== 4-Nov-2021::14:14:00.234306 ===
sheldon_suggestions_server:24 >> Error: badrpc
        Stack: [{rpc,check,2,[{file,"rpc.erl"},{line,1262}]},
                {sheldon_suggestions_server,suggestions,2,
                   ...

[13609231,12357943,15000723,15018383,12796271,14544979,
 12315257,14631879,13806544,12979898]

[elbrujohalcon]

Excellent work, @vkatsuba !!! 🤯
Just a tiny rename, but that's all… I ❤️ this PR!