Language server code complete

[codecov[bot]]

Codecov Report

Attention: 26 lines in your changes are missing coverage. Please review.

Comparison is base (2967e4e) 87.90% compared to head (1bd2d3f) 88.00%.

Files	Patch %	Lines
src/bin/languageserver/mod.rs	97.70%	9 Missing :warning:
src/sema/functions.rs	78.57%	9 Missing :warning:
src/sema/dotgraphviz.rs	20.00%	4 Missing :warning:
src/sema/expression/constructor.rs	33.33%	2 Missing :warning:
src/sema/ast.rs	75.00%	1 Missing :warning:
src/sema/contracts.rs	97.22%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1560 +/- ## ========================================== + Coverage 87.90% 88.00% +0.10% ========================================== Files 133 133 Lines 64560 64959 +399 ========================================== + Hits 56749 57167 +418 + Misses 7811 7792 -19 ```

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