Highlighting references feature should highlight unsafe ops

[Veykril]

When the cursor is on an the unsafe token of an unsafe block we should highlight all the unsafe operations within that unsafe block, similar to how we highlighting await points for asnyc blocks, loop control pointer for loops etc.

[Veykril]

So we want a new branch here

rust-analyzer/crates/ide/src/highlight_related.rs

Lines 79 to 101 in 11c9c4d

	match token.kind() {
	T![?] if config.exit_points && token.parent().and_then(ast::TryExpr::cast).is_some() => {
	highlight_exit_points(sema, token).remove(&file_id)
	}
	T![fn] | T![return] | T![->] if config.exit_points => {
	highlight_exit_points(sema, token).remove(&file_id)
	}
	T![await] | T![async] if config.yield_points => {
	highlight_yield_points(sema, token).remove(&file_id)
	}
	T![for] if config.break_points && token.parent().and_then(ast::ForExpr::cast).is_some() => {
	highlight_break_points(sema, token).remove(&file_id)
	}
	T![break] | T![loop] | T![while] | T![continue] if config.break_points => {
	highlight_break_points(sema, token).remove(&file_id)
	}
	T![|] if config.closure_captures => highlight_closure_captures(sema, token, file_id),
	T![move] if config.closure_captures => highlight_closure_captures(sema, token, file_id),
	_ if config.references => {
	highlight_references(sema, token, FilePosition { file_id, offset })
	}
	_ => None,
	}

, leveraging this

rust-analyzer/crates/hir/src/semantics.rs

Line 1593 in 11c9c4d

pub fn get_unsafe_ops(&self, def: DefWithBody) -> FxHashSet<ExprOrPatSource> {

to get all relevant unsafe operations

[gohome001]

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