Resize stack when needed

[giann]

Right now the stack is a fixed array of 100 000 elements.

• Detect when stack is overflowed
• If under a high limit (lua is 1 000 000), realloc stack (requires to update any reference to it)
• If higher that limit, throw .StackOverflow

[giann]

Reading https://without.boats/blog/why-async-rust/ I realized that creating a fiber (and so a new stack) could be a performance and memory impact.

Do we need relatively short stack at the beginning and grow or shrink it as needed?