Add support for special characters in query params

[cuminandpaprika]

Enables the use of special characters such as - . etc in Query Param names

Fixes anz-bank/sysl-go#115

Changes proposed in this pull request:

• Add support for special chars in query params

Checklist:

• Added related tests
• Made corresponding changes to the documentation

[codecov]

Codecov Report

Merging #871 into master will not change coverage.
The diff coverage is 77.77%.

@@           Coverage Diff           @@
##           master     #871   +/-   ##
=======================================
  Coverage   83.35%   83.35%           
=======================================
  Files          73       73           
  Lines       10609    10609           
=======================================
  Hits         8843     8843           
  Misses       1432     1432           
  Partials      334      334           

Impacted Files	Coverage Δ
pkg/parse/listener_impl.go	89.50% <66.66%> (ø)
pkg/mermaid/datamodeldiagram/datamodeldiagram.go	58.57% <73.43%> (ø)
...endpointanalysisdiagram/endpointanalysisdiagram.go	82.97% <100.00%> (ø)
...g/mermaid/integrationdiagram/integrationdiagram.go	84.37% <100.00%> (ø)
pkg/mermaid/sequencediagram/sequencediagram.go	74.19% <100.00%> (ø)

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[nofun97]

LGTM