templates: run 'pre-commit' outside of 'checks'

This allows adding pre-commit checks that can't be run in the sandbox,
such as `clippy` in Rust etc...

Not strictly necessary for the few checks that are enabled in the
current templates, but I like to have very similar setups across the
board.

templates/c++-cmake/.woodpecker/check.yml

@@ -2,6 +2,11 @@ labels:
   type: exec
 
 pipeline:
+- name: pre-commit checks
+  image: bash
+  commands:
+  - nix shell . -c pre-commit run --all
+
 - name: nix flake check
   image: bash
   commands:

templates/c++-cmake/flake.nix

@@ -86,8 +86,6 @@
       {
         checks = {
           inherit (self.packages.${system}) project;
-
-          inherit pre-commit;
         };
 
         devShells = {

templates/c++-meson/.woodpecker/check.yml

@@ -2,6 +2,11 @@ labels:
   type: exec
 
 pipeline:
+- name: pre-commit checks
+  image: bash
+  commands:
+  - nix shell . -c pre-commit run --all
+
 - name: nix flake check
   image: bash
   commands:

templates/c++-meson/flake.nix

@@ -86,8 +86,6 @@
       {
         checks = {
           inherit (self.packages.${system}) project;
-
-          inherit pre-commit;
         };
 
         devShells = {