added checksum jinja filters

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "stacks"
-version = "2.0.5"
+version = "2.0.6"
 description = "Stacks, the Terraform code pre-processor"
 readme = "README.md"
 requires-python = ">=3.10"

src/stacks/filters/__init__.py

@@ -1,12 +1,17 @@
-from .throw import throw
+from .checksum import md5, sha1, sha256, sha512
 from .deepformat import deepformat
 from .lookup import variable, output, resource
+from .throw import throw
 
 
 __all__ = [
-    throw,
+    md5,
+    sha1,
+    sha256,
+    sha512,
     deepformat,
     variable,
     output,
     resource,
+    throw,
 ]

src/stacks/filters/checksum.py

@@ -0,0 +1,17 @@
+import hashlib
+
+
+def md5(ctx, string):
+    return hashlib.md5(string.encode()).hexdigest()
+
+
+def sha1(ctx, string):
+    return hashlib.sha1(string.encode()).hexdigest()
+
+
+def sha256(ctx, string):
+    return hashlib.sha256(string.encode()).hexdigest()
+
+
+def sha512(ctx, string):
+    return hashlib.sha512(string.encode()).hexdigest()