fix: test and fix types

[qwelias]

• added tests for types
• fixed types
• added peek on Computed
• fixed toString to always return string

[WebReflection]

beside conflicts with what's in the main, I am not sure why changes to the code are landing ... it's OK for the String(this.value) but the rest looks off, specially added peek() for the computed which should've been covered already and it's inherited like it is in signals

[qwelias]

Separated import fix https://github.com/WebReflection/usignal/pull/26

[WebReflection]

tests failing now

[WebReflection]

I've merged the other ... let's see how this goes but it need a rebase from main

[qwelias]

I have removed all changes aside the types test for now, which need to be fixed

Before i can fix them i need an answer here as i cannot understand it

[coveralls]

Pull Request Test Coverage Report for Build 4179925426

• 22 of 22 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 4171654296:	0.0%
Covered Lines:	329
Relevant Lines:	329

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💛 - Coveralls

[qwelias]

@WebReflection did I miss anything?