Allow dropping redundant punctuation

[flyingsilverfin]

Problem to Solve

It would make TypeQL simpler and easier to read to be able to drop the trailing semicolon in places where a curly bracket is already a delimiter (for a start).

Examples:

match
  $x isa person;
  { $x has name "john"; } or { $x has name "bob"; };  ### could drop this one

match ...
fetch {
   .
};   ### make this one optional

We could also imagine it for the last statement in a block:

match
  $x isa person;
  $y isa person; ### drop this one
insert