feat: parser to parse test files and load testcases

[scgkiran]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 75.66628% with 210 lines in your changes missing coverage. Please review.

Project coverage is 58.28%. Comparing base (833624e) to head (808dfb5).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
testcases/parser/visitor.go	73.49%	130 Missing and 33 partials ⚠️
literal/utils.go	89.15%	12 Missing and 6 partials ⚠️
types/parser/util/error_listener.go	48.14%	13 Missing and 1 partial ⚠️
testcases/parser/nodes.go	57.14%	4 Missing and 2 partials ⚠️
types/parser/visitor.go	0.00%	6 Missing ⚠️
testcases/parser/parse.go	90.90%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #69      +/-   ##
==========================================
+ Coverage   56.56%   58.28%   +1.71%     
==========================================
  Files          38       43       +5     
  Lines        8268     9130     +862     
==========================================
+ Hits         4677     5321     +644     
- Misses       3392     3565     +173     
- Partials      199      244      +45     

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[EpsilonPrime]

There are a large number of positive paths in visitor.go without test coverage.

[scgkiran]

There are a large number of positive paths in visitor.go without test coverage.

Fixed most of them. Rest of them need a grammar change, I missed few literal types for test cases.

[scgkiran]

I will raise another PR to take care of the pending grammar changes in this PR