chore(template): Add regenerate-nix to pre-commit config (#509)

* chore(template): Add regenerate-nix to pre-commit config

* perf(template): Only run regenerate-charts on relevant changes

* perf(template): Adjust stages which run local pre-commit hooks

Author: Techassi

template/.pre-commit-config.yaml.j2

@@ -59,29 +59,38 @@ repos:
         name: regenerate-charts
         language: system
         entry: make regenerate-charts
-        stages: [pre-commit, pre-merge-commit, manual]
+        stages: [pre-commit, pre-merge-commit]
         pass_filenames: false
+        files: \.rs$|Cargo\.(toml|lock)
+
+      - id: regenerate-nix
+        name: regenerate-nix
+        language: system
+        entry: make regenerate-nix
+        stages: [pre-commit, pre-merge-commit]
+        pass_filename: false
+        files: Cargo\.lock
 
       - id: cargo-test
         name: cargo-test
         language: system
         entry: cargo test
-        stages: [pre-commit, pre-merge-commit, manual]
+        stages: [pre-commit, pre-merge-commit]
         pass_filenames: false
         files: \.rs$|Cargo\.(toml|lock)
 
       - id: cargo-rustfmt
         name: cargo-rustfmt
         language: system
         entry: cargo +{[rust_nightly_version}] fmt --all -- --check
-        stages: [pre-commit]
+        stages: [pre-commit, pre-merge-commit]
         pass_filenames: false
         files: \.rs$
 
       - id: cargo-clippy
         name: cargo-clippy
         language: system
         entry: cargo clippy --all-targets -- -D warnings
-        stages: [pre-commit]
+        stages: [pre-commit, pre-merge-commit]
         pass_filenames: false
         files: \.rs$