Fix: Improper parameterizing of variables without values

[oscar60310]

Description

1. Ignore parameterization of undefined value.

   {{ context.params.somethingUndefined }} -- output nothing 

2. Add void filter

   {% set someArr = [] %}
   {{ someArr.push(1) |  void }}
   
   select {{ someArr[0] }} as a;

Document
https://vulcan-sql-document-git-fix-avoid-pa-8e149a-vulcan-sql-document.vercel.app/docs/api-building/sql-syntax#void-filter

Issue ticket number

closes #112

Additional Context

[vercel]

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Name	Status	Preview	Updated
vulcan-sql-document	✅ Ready (Inspect)	Visit Preview	Nov 2, 2022 at 8:45AM (UTC)

[codecov-commenter]

Codecov Report

Base: 93.02% // Head: 93.04% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (458016f) compared to base (120eec7).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #132      +/-   ##
===========================================
+ Coverage    93.02%   93.04%   +0.02%     
===========================================
  Files          275      277       +2     
  Lines         4157     4171      +14     
  Branches       548      549       +1     
===========================================
+ Hits          3867     3881      +14     
  Misses         192      192              
  Partials        98       98              

Flag	Coverage Δ
build	95.18% <ø> (ø)
core	93.71% <100.00%> (+0.04%)	⬆️
extension-dbt	97.43% <ø> (ø)
extension-debug-tools	98.11% <ø> (ø)
extension-driver-duckdb	100.00% <ø> (ø)
extension-driver-pg	96.11% <ø> (ø)
extension-driver-snowflake	94.59% <ø> (ø)
integration-testing	96.15% <ø> (ø)
serve	90.03% <ø> (ø)
test-utility	∅ <ø> (∅)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/core/src/lib/data-query/parameterizer.ts	100.00% <100.00%> (ø)
...ine/built-in-extensions/query-builder/constants.ts	100.00% <100.00%> (ø)
...-engine/built-in-extensions/query-builder/index.ts	100.00% <100.00%> (ø)
...lt-in-extensions/query-builder/voidFIlterRunner.ts	100.00% <100.00%> (ø)
...t-in-extensions/query-builder/voidFilterBuilder.ts	100.00% <100.00%> (ø)

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[kokokuo]

LGTM 👍