strict effects (#18777)

* fixes #17369
* megatest is green for --cpu:arm64
* docgen output includes more tags/raises
* implemented 'effectsOf' 
* algorithm.nim: uses new effectsOf annotation
* closes #18376
* closes #17475
* closes #13905
* allow effectsOf: [a, b]
* added a test case
* parameters that are not ours cannot be declared as .effectsOf
* documentation
* manual: added the 'sort' example
* bootstrap with the new better options

tests/effects/teffects1.nim

@@ -6,7 +6,7 @@ teffects1.nim(22, 29) Hint: 'lier' cannot raise 'IO2Error' [XCannotRaiseY]
 teffects1.nim(38, 21) Error: type mismatch: got <proc (x: int): string{.noSideEffect, gcsafe, locks: 0.}> but expected 'MyProcType = proc (x: int): string{.closure.}'
 .raise effects differ'''
 """
-
+{.push warningAsError[Effect]: on.}
 type
   TObj {.pure, inheritable.} = object
   TObjB = object of TObj
@@ -41,3 +41,4 @@ type mismatch: got <proc (x: int): string{.noSideEffect, gcsafe, locks: 0.}> but
 
 ]#
 {.pop.}
+{.pop.}