[Compiler] Improve VM stack operations

[turbolent]

Work towards #3742

Description

The VM has some helper functions for the operand stack, e.g. pop2 and pop3, which pop 2 and 3 values from the stack respectively. These functions currently return the values in reverse order, which is a bit confusing and error prone. For example, the implementation of the SetIndex instruction in vm.opSetIndex gets the values in reverse order.

Change the order of the return valuesto reflect the order on the stack.

Also, add tests and add a peekN helper, as well as tests.

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• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
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[github-actions]

Cadence Benchstat comparison

This branch with compared with the base branch onflow:feature/compiler commit 6ce5b49
The command for i in {1..N}; do go test ./... -run=XXX -bench=. -benchmem -shuffle=on; done was used.
Bench tests were run a total of 7 times on each branch.

Collapsed results for better readability