Limit recursion to avoid stack overflow (#7657)

Add recursion limit to `def` and `block`.
Summary of this PR , it will detect if `def` call itself or not .
Then execute by using `stack` which I think best choice to use with this
design and core as it is available in all crates and mutable and
calculate the recursion limit on calling `def`.
Set 50 as recursion limit on `Config`.
Add some tests too .

Fixes #5899

Co-authored-by: Reilly Wood <reilly.wood@icloud.com>

crates/nu-protocol/src/ast/block.rs

@@ -11,6 +11,7 @@ pub struct Block {
     pub captures: Vec<VarId>,
     pub redirect_env: bool,
     pub span: Option<Span>, // None option encodes no span to avoid using test_span()
+    pub recursive: Option<bool>, // does the block call itself?
 }
 
 impl Block {
@@ -51,6 +52,7 @@ impl Block {
             captures: vec![],
             redirect_env: false,
             span: None,
+            recursive: None,
         }
     }
 }
@@ -66,6 +68,7 @@ where
             captures: vec![],
             redirect_env: false,
             span: None,
+            recursive: None,
         }
     }
 }