feat(singlestore): Added Tokenizer

[AdalbertMemSQL]

Added several new tokens.
:> and :!> are used in SingleStore as cast operators.
::$ and ::% are used as JSON extract operators.

[VaggelisD]

Hey @AdalbertMemSQL, thank you for the PR once again!

• Can you please point at the relevant docs?
• Can we add some identity tests that validate those new tokens?

[AdalbertMemSQL]

Hey @VaggelisD
Regarding docs:

• For BYTE_STRINGS I didn't find information in SingleStore documentation, but I tested e'' syntax and it works

singlestore> select e'text'; 
+------+
| text |
+------+
| text |
+------+
1 row in set (0.05 sec)

• BSON
• GEOGRAPHYPOINT
• Cast operators
• JSON operators

[georgesittas]

Looks good @AdalbertMemSQL, just one comment on my end. Thanks!

Let's also resolve the conflicts, similarly to the other PR.