Quick Rename/Automatic Renaming similar to IDA

[agnosticlines]

What is the feature you'd like to have?
IDA added a feature in 7.6 that automatically names variables according to some rules, this can massively speed up time renaming every copy of a variable.

Here are the rules from the blog article (https://hex-rays.com/blog/igors-tip-of-the-week-76-quick-rename/):

• by name of the opposite variable in assignments: v1 = myvar: rename v1 -> myvar1
• by name of the opposite variable in comparisons: offset < v1: rename v1 -> offset1
• as pointer to a well-named variable: v1 = &Value: rename v1 -> p_Value
• by structure field in expressions: v1 = x.Next: rename v1 -> Next
• as pointer to a structure field: v1 = &x.left: rename v1 -> p_left
• by name of formal argument in a call: close(v1): rename v1 -> fd
• by name of a called function: v1=create_table(): rename v1 -> table
• by return type of called function: v1 = strchr(s, '1'): rename v1 -> str
• by a string constant: v1 = fopen("/etc/fstab", "r"): rename v1 -> etc_fstab
• by variable type: error_t v1: rename v1 -> error
• standard name for the result variable: return v1: rename v1 -> ok if current function returns bool

Some additional ones that would be interesting is for functions where there's no control flow divergence and only a single function call (sprintf for example), they could be auto renamed to sprintf_wrapper or similar.

Some of these are probably a bit too much like Igor/Ilfaks personal choice such as the create_table one, but being able to automatically rename things would be extremely useful, ideally each rule would have options to enable/disable it, I'd say it could be a workflow thing but it seems to be more useful during manual interaction and renaming of objects/variables.

Tagging @psifertex because I mentioned I would make an issue to track this

[xusheng6]

Related to #2558