Add type hints for added mul_low and pow_trunc methods

Author: remyoudompheng

src/flint/types/fmpq_poly.pyi

@@ -71,6 +71,8 @@ class fmpq_poly(flint_poly[fmpq]):
     def left_shift(self, n: int, /) -> fmpq_poly: ...
     def right_shift(self, n: int, /) -> fmpq_poly: ...
     def truncate(self, n: int, /) -> fmpq_poly: ...
+    def mul_low(self, other: fmpq_poly, n: int) -> fmpq_poly: ...
+    def pow_trunc(self, e: int, n: int) -> fmpq_poly: ...
 
     def gcd(self, other: ifmpq_poly, /) -> fmpq_poly: ...
     def discriminant(self) -> fmpq: ...

src/flint/types/fmpz_poly.pyi

@@ -59,6 +59,8 @@ class fmpz_poly(flint_poly[fmpz]):
     def left_shift(self, n: int, /) -> fmpz_poly: ...
     def right_shift(self, n: int, /) -> fmpz_poly: ...
     def truncate(self, n: int, /) -> fmpz_poly: ...
+    def mul_low(self, other: fmpz_poly, n: int) -> fmpz_poly: ...
+    def pow_trunc(self, e: int, n: int) -> fmpz_poly: ...
 
     def gcd(self, other: ifmpz_poly, /) -> fmpz_poly: ...
     def content(self) -> fmpz: ...

src/flint/types/nmod_poly.pyi

@@ -56,6 +56,8 @@ class nmod_poly(flint_poly[nmod]):
     def __rdivmod__(self, other: inmod_poly) -> tuple[nmod_poly, nmod_poly]: ...
     def left_shift(self, n: int) -> nmod_poly: ...
     def right_shift(self, n: int) -> nmod_poly: ...
+    def mul_low(self, other: nmod_poly, n: int) -> nmod_poly: ...
+    def pow_trunc(self, e: int, n: int) -> nmod_poly: ...
     def __pow__(self, other: int, mod: inmod_poly | None = None) -> nmod_poly: ...
     def pow_mod(
         self, e: int, modulus: inmod_poly, mod_rev_inv: inmod_poly | None = None