iarc rule based engine

[schakrava]

Implement a rule based engine into iarc such that rules can be defined by end users. These rules define the archiving criteria.

Initial set of rules:
file metadata rule for owner and group owner
file metadata rules for access time and modified time
filename regex
size of the file

Split this issue as needed after the rule based engine implementation is done.

[pethuraj]

o Archiving shall be also based on user specified archive trigger file: if “/Source///trigger.iArc” is present then ARCHIVE data from “/Source//” to “/Destination//” Entire directory shall be moved
o Optionally leave “/Source//.ARCHIVED” info txt file