Add Helm and mows template functions with feature flags

- Add helm-functions feature: 152 Helm-compatible template functions
- Add mows-functions feature: 3 mows-specific functions (mowsRandomString, mowsDigest, mowsJoindomain)
- Add all-functions feature: combines both with all_functions() helper
- Separate modules: helm_functions/, mows_functions/, all_functions.rs
- Each feature can be enabled independently with minimal dependencies

Author: firstdorsal

Cargo.toml

@@ -1,22 +1,46 @@
 [package]
 name = "gtmpl-ng"
-version = "0.7.2"
+version = "0.7.3"
 authors = ["Florian Dieminger <me@fiji-flo.de>", "Paul Colin Hennig <8d_fvfmaa-o2wf_79aqig6g2ki6-09ffkeqmyo3d@vindelicum.eu>"]
-description = "The Golang Templating Language for Rust (fork with line number fix)"
+description = "The Golang Templating Language for Rust (fork with line number fix and Helm functions)"
 license = "MIT"
 repository = "https://github.com/firstdorsal/gtmpl-rust"
 documentation = "https://docs.rs/crate/gtmpl-ng"
-keywords = ["golang", "template", "templating"]
+keywords = ["golang", "template", "templating", "helm"]
 categories = ["template-engine"]
 readme = "README.md"
 include = ["Cargo.toml", "src/**/*.rs", "tests/**/*.rs", "README.md", "LICENSE"]
 edition = "2018"
 
 [badges]
-maintenance = { status = "passively-maintained" }
+maintenance = { status = "actively-developed" }
 
 [features]
 gtmpl_dynamic_template = []
+helm-functions = [
+    "dep:sha1",
+    "dep:sha2",
+    "dep:md5",
+    "dep:bcrypt",
+    "dep:rand",
+    "dep:rcgen",
+    "dep:time",
+    "dep:data-encoding",
+    "dep:serde",
+    "dep:serde_json",
+    "dep:serde_yaml",
+    "dep:regex",
+    "dep:uuid",
+    "dep:x509-parser",
+    "dep:pem",
+]
+mows-functions = [
+    "dep:sha1",
+    "dep:sha2",
+    "dep:md5",
+    "dep:rand",
+]
+all-functions = ["helm-functions", "mows-functions"]
 
 [dependencies]
 lazy_static = "1"
@@ -25,5 +49,22 @@ gtmpl_value = "0.5"
 anyhow = "1"
 thiserror = "1"
 
+# Optional dependencies for helm-functions
+sha1 = { version = "0.10", optional = true }
+sha2 = { version = "0.10", optional = true }
+md5 = { version = "0.7", optional = true }
+bcrypt = { version = "0.15", optional = true }
+rand = { version = "0.9", optional = true }
+rcgen = { version = "0.13", optional = true }
+time = { version = "0.3", optional = true }
+data-encoding = { version = "2.6", optional = true }
+serde = { version = "1", features = ["derive"], optional = true }
+serde_json = { version = "1", optional = true }
+serde_yaml = { version = "0.9", optional = true }
+regex = { version = "1", optional = true }
+uuid = { version = "1", features = ["v4"], optional = true }
+x509-parser = { version = "0.16", optional = true }
+pem = { version = "3", optional = true }
+
 [dev-dependencies]
 gtmpl_derive = "0.5"

src/all_functions.rs

@@ -0,0 +1,31 @@
+//! Combined template functions module
+//!
+//! This module provides all template functions (Helm + mows) combined.
+//! Enable with the `all-functions` feature flag.
+
+use crate::helm_functions::HELM_FUNCTIONS;
+use crate::mows_functions::MOWS_FUNCTIONS;
+use crate::Func;
+
+/// Get all template functions (Helm + mows) as a Vec
+///
+/// This function returns all 155 template functions:
+/// - 152 Helm-compatible functions
+/// - 3 mows-specific functions
+pub fn all_functions() -> Vec<(&'static str, Func)> {
+    let mut funcs = Vec::with_capacity(HELM_FUNCTIONS.len() + MOWS_FUNCTIONS.len());
+    funcs.extend_from_slice(&HELM_FUNCTIONS);
+    funcs.extend_from_slice(&MOWS_FUNCTIONS);
+    funcs
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_all_functions_count() {
+        let funcs = all_functions();
+        assert_eq!(funcs.len(), 155); // 152 helm + 3 mows
+    }
+}