[Merged by Bors] - Refactor binding handling APIs

[jedel1043]

We have currently some bugs related to binding assignments on arithmetic operations (+=, ++, ?=, etc.), but fixing those was getting a bit complex with our current bindings APIs.

This PR refactors our binding handling APIs to be a bit easier to use.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	94,593	94,593	0
Passed	73,210	73,218	+8
Ignored	17,532	17,532	0
Failed	3,851	3,843	-8
Panics	0	0	0
Conformance	77.39%	77.40%	+0.01%

Fixed tests (8):

test/language/statements/with/S12.10_A3.3_T4.js (previously Failed)
test/language/statements/with/S12.10_A1.3_T2.js (previously Failed)
test/language/statements/with/S12.10_A1.2_T2.js (previously Failed)
test/language/statements/with/S12.10_A1.3_T4.js (previously Failed)
test/language/statements/with/S12.10_A1.2_T1.js (previously Failed)
test/language/statements/with/S12.10_A1.3_T1.js (previously Failed)
test/language/statements/with/S12.10_A1.2_T4.js (previously Failed)
test/language/statements/function/S13.2.2_A17_T3.js (previously Failed)

[raskad]

I like these changes. The find binding locator mechanic seems great.

[HalidOdat]

Nice changes! Looks good to me!

[jedel1043]

bors r+

[bors]

Pull request successfully merged into main.

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