idea: add a default license and encourage contributors to add a license in the meta section

[ruppde]

to actually make some use of all the nice rules here, it would be useful if some license would be attached. you could add a default license to the repo and encourage contributors to add a license in the meta section, if they don't like the default e.g.:

private rule webshell_encoded_stats : WEBSHELL PROD {
	meta:
		description = "Webshell having statistical signs of encoded code which gets dynamically executed"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		license = "https://creativecommons.org/licenses/by-nc/4.0/"
		author = "Arnim Rupp"
		date = "2021/02/07"
	condition:
...

[100DaysofYARA]

I like the idea! I've added one for my own rules, will let this percolate to see if other authors are willing to do so!