Add support for error constructor expressions

[heshanpadmasiri]

Purpose

Resolves #185
Depends on #183

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[codecov]

Codecov Report

❌ Patch coverage is 72.25490% with 283 lines in your changes missing coverage. Please review.
✅ Project coverage is 30.92%. Comparing base (0424063) to head (e73ab9a).

Files with missing lines	Patch %	Lines
ast/types.go	16.49%	79 Missing and 2 partials ⚠️
ast/expressions.go	6.89%	54 Missing ⚠️
ast/node_builder.go	71.52%	36 Missing and 7 partials ⚠️
semantics/semantic_analyzer.go	79.82%	17 Missing and 6 partials ⚠️
semtypes/mapping_alternative.go	59.18%	14 Missing and 6 partials ⚠️
semantics/type_resolver.go	86.02%	15 Missing and 4 partials ⚠️
ast/pretty_printer.go	95.20%	3 Missing and 3 partials ⚠️
ast/walk.go	85.36%	4 Missing and 2 partials ⚠️
bir/bir_gen.go	91.66%	6 Missing ⚠️
bir/non_terminator.go	50.00%	6 Missing ⚠️
... and 6 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #191      +/-   ##
==========================================
+ Coverage   27.99%   30.92%   +2.92%     
==========================================
  Files         254      254              
  Lines       53865    54673     +808     
==========================================
+ Hits        15082    16909    +1827     
+ Misses      37855    36755    -1100     
- Partials      928     1009      +81     

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