Introduce indirect error constructors

[rdhananjaya]

Purpose

Allow creating error values using Error type name

var e0 = UserDefError(detail1="arg");
UserDefError e1 = UserDefError(detail1="arg");

Error reason is inferred from the provided error type.

Fixes ballerina-platform/ballerina-spec#223

Approach

Describe how you are implementing the solutions along with the design details.

Samples

Provide high-level details about the samples related to this feature.

Remarks

List any other known issues, related PRs, TODO items, or any other notes related to the PR.

Check List

• Read the Contributing Guide
• Required Balo version update
• Updated Change Log
• Checked Tooling Support (#)
• Added necessary tests
  • Unit Tests
  • Spec Conformance Tests
  • Integration Tests
  • Ballerina By Example Tests
• Increased Test Coverage
• Added necessary documentation
  • API documentation
  • Module documentation in Module.md files
  • Ballerina By Examples

[codecov-io]

Codecov Report

Merging #16244 into master will increase coverage by 1.63%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             master   #16244      +/-   ##
============================================
+ Coverage     11.25%   12.89%   +1.63%     
  Complexity     2969     2969              
============================================
  Files          1500     1495       -5     
  Lines         82798    72287   -10511     
  Branches       9696     8705     -991     
============================================
  Hits           9318     9318              
+ Misses        72555    62044   -10511     
  Partials        925      925

Impacted Files	Coverage Δ	Complexity Δ
.../compiler/semantics/analyzer/SemanticAnalyzer.java	0% <ø> (ø)	0 <0> (ø)	⬇️
.../ballerinalang/util/diagnostic/DiagnosticCode.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...alang/compiler/semantics/analyzer/TypeChecker.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ler/parser/antlr4/BallerinaParserBaseListener.java
...er/parser/antlr4/BallerinaParserErrorStrategy.java
...nalang/compiler/parser/antlr4/BallerinaParser.java
...inalang/compiler/parser/antlr4/BallerinaLexer.java
...er/parser/antlr4/BallerinaParserErrorListener.java

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