Feat: fix multiple return issue and extend analyzer tests

[mrLSD]

Description

Fixes

• Fixed issue For semantic function body state return can call multiple times #8 with multiple returns for the function-body semantic analysis.
• Fixed If-loop label parameters fail when missing label parameters for the loop.
• Fixed issue Fix if-end label instruction for IfStatement: if-else, else-if statements #11 and only one if-end label exists for the if-condition.
• Fixed issue Fix loop-begin label for the loop-statement #12 for loop-body repeatition and extended tests for that.

Tests

Extended semantic analyzer tests:

• if-conditions
• loops
• function-body
• main-run
• covered with tests all SemanticStackContext instructions

Coverage

💯 100% tests coverage

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files	Coverage Δ
src/ast.rs	100.00% <100.00%> (+19.34%)	⬆️
src/semantic.rs	100.00% <100.00%> (+41.74%)	⬆️
src/types/block_state.rs	100.00% <ø> (ø)
src/types/error.rs	100.00% <ø> (ø)
src/types/semantic.rs	100.00% <100.00%> (+44.32%)	⬆️
tests/binding_tests.rs	100.00% <100.00%> (ø)
tests/function_call_tests.rs	100.00% <100.00%> (ø)
tests/if_tests.rs	100.00% <100.00%> (ø)
tests/loop_tests.rs	100.00% <100.00%> (ø)
tests/main_tests.rs	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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