Formats strings to use inline params when possible

[sr-gi]

The rule of thumb seems to be (at least for now):

• No method / function calls
• No arithmetic operations
• No field access (foo.bar)
• No package access (foo::bar)
• Some additional limitations for panic (such as using a match variant)

This is due to clippy complaining about some, so I went ahead and updated all the ones I've seen.