Static[T] fixes (#7333)

* fix the usage of unresolved static[T] parameters in proc signatures
* fix tsametype and tmacrogenerics
* Allow creating composite type classes with concepts and using them in type signatures
* Allow integers to be used in ident concatenations
* Support using imported C++ generic types in proc signatures
* fixes #7230
* closes #7379
* re-enable some metatype tests

tests/metatype/typeclassinference.nim

@@ -1,7 +1,6 @@
 discard """
   errormsg: "type mismatch: got <string> but expected 'ptr'"
   line: 20
-  disabled: true
 """
 
 import typetraits
@@ -12,7 +11,7 @@ type
 var x = Vec([1, 2, 3])
 
 static:
-  assert x.type.name == "Vec[static[int](3), int]"
+  assert x.type.name == "Vec[3, system.int]"
 
 var str1: string = "hello, world!"
 var ptr1: ptr = addr(str1)