Improvements of Go language frontend

[oxisto]

Features

• Resolves Implementation of Go's iota expression #1300
• Resolves Type aliasing in Go #1293
• Resolves Initial support type constraints, also known as generics in Go #1294
• Resolves Parse ast.SendStmt #1295
• Resolves Parse ast.TypeSwitchStmt #1296
• Resolves Parse ast.IndexListExpr #1298
• Resolves Initial support for interface and struct types #1299
• Resolves Implementation of Go's iota expression #1300
• Resolves Support for build tags and name-based file build selection #1301
• Resolving key references in key value expressions back to their field declaration
• Added language traits for first-class functions and anonymous identifiers

Fixes

• Fixed scope handling of record declaration and methods
• Fixed an issue that lead to the wrong package name when using module versions
• Fixed issue where not all top-level declarations had an FQN

[konradweiss]

Besides some Doc and renaming it looks good to me, there are also two comments where I am not sure whether the problem should be solved in this PR or another one in which case I recommend marking the place with a TODO.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
11 Code Smells

86.3% Coverage
0.0% Duplication