Reformat local variable names to camelCase

Reformat local variable and method parameter names to camelCase to comply with Java naming convention. The recipe will not rename variables declared in for loop controls or catches with a single character. The first character is set to lower case and existing capital letters are preserved. Special characters that are allowed in java field names $ and _ are removed (unless the name starts with one). If a special character is removed the next valid alphanumeric will be capitalized. Currently, does not support renaming members of classes. The recipe will not rename a variable if the result already exists in the class, conflicts with a java reserved keyword, or the result is blank. Consistent naming conventions improve readability and reduce friction when navigating unfamiliar code.