Add hint when only missing '&' in polymorphic parameters

[Creativty]

Provides useful suggestion in cases where applicable such as:
main.odin

package main

main :: proc() {
    arr := make([dynamic]int)
    append_elem(arr, 3)
}

$ odin check .
.../main.odin(5:14) Error: Cannot determine polymorphic type from parameter: '[dynamic]int' to '^$T/[dynamic]$E'
	append_elem(arr, 3)
	            ^~^
	Suggestion: Did you mean '&arr'

This commits also add the ctags file tags to .gitignore

[Creativty]

The commit 43529dd has implemented the proposed solution.