feat: record template operations to post-hook

[aliev]

Sometimes it is useful to know what operations were performed by the processor after completion. This PR records all operations along with the answers to the stdout of post-hook

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src/hooks.rs:22

• [nitpick] The field name 'operations' is ambiguous. It should be renamed to 'template_operations' for better clarity.

pub operations: Option<Vec<TemplateOperation>>,

src/template/operation.rs:5

• Ensure that the serialization of 'TemplateOperation' is covered by tests.

#[derive(Debug, Serialize, Clone)]