GitHub/RailsRenderLiteral

tldr; render MUST be passed a string literal template path.

• When used in conjunction with GitHub/RailsViewRenderPathsExist, linters can ensure the target file exists on disk and would not crash rendering a missing template.
• Makes it easier for humans to trace callers of a template. Simply search for the full path of the target template to find all call sites.
• This same call site tracing enables automated unused template checking. If no callers are found, the template can be safely removed.
• Enables render precompilation and inlining optimizations. Target templates can be compiled and inlined on boot time rather than deferring to first render to lazily compile templates.