single character literal support for non alpha chars

[ikappaki]

Basilisp does not accept non-alphanumeric character literals

To reproduce

1. Open up the REPL and try input some non-alphanumeric literals, the reader fails to convert them into strings

basilisp.user=> \$
Traceback (most recent call last):
  ;; ...
basilisp.lang.compiler.exception.CompilerException: unable to resolve symbol '$' in this context {:form $ :phase :analyzing}

basilisp.user=> \]
Traceback (most recent call last):
  File "C:\src\basilisp\src\basilisp\prompt.py", line 94, in _
    list(
  File "C:\src\basilisp\src\basilisp\lang\reader.py", line 1683, in read_str
    yield from read(
  File "C:\src\basilisp\src\basilisp\lang\reader.py", line 1654, in read
    expr = _read_next(ctx)
           ^^^^^^^^^^^^^^^
  File "C:\src\basilisp\src\basilisp\lang\reader.py", line 1590, in _read_next
    raise ctx.syntax_error(f"Unexpected token '{token}'")
basilisp.lang.reader.SyntaxError: Unexpected token ']' (line: 1, col: 2)

contrast this with Clojure

user> \$
\$
user> \]
\]

PR to follow.