Make WITH SESSION appear before FUNCTION

[wendigo]

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## Section
* Fix some things. ({issue}`issuenumber`)

[mosabua]

Can you also expand the docs a bit .. link to it from session properties doc and add an example somewhere in the selecd.md

[wendigo]

Alternatively:

queryScoped
    :   (WITH SESSION sessionProperty (',' sessionProperty)*)
      | (WITH functionSpecification (',' functionSpecification)*)
      | (WITH SESSION sessionProperty (',' sessionProperty)* functionSpecification (',' functionSpecification)*)
    ;

as we have three distinct cases:

WITH session functions
WITH session
WITH functions

[wendigo]

let me know @martint which option do you prefer

[martint]

You're going to have to adjust the test in TestSqlParser.testWithSessionAndFunction() accordingly