-   Updated help messages for runtests, validate commands displayed on running `sfdx provar --help`
-   Updated company name in LICENSE.md

…ratch Org Passwords properly (#25)

* PRO-16923: ProvarDX runtests fails to handle special characters in Scratch Org Passwords properly

* PRO-16923: Special characters were causing issues on different OS so encoded the password

* PRO-16897: ProvarDX: Runtests secrets flag override incorrectly documented

* PRO-16897: ProvarDX: Runtests secrets flag override incorrectly documented

* PRO-16890 : Enforce required flags for provar:metadatacache

The command started executing even when required flags were not given.
Changed that to give error in typescript itself. Also made changes to
make sure that the flags work correctly in tandem.

* PRO-16890 : Implement review comments and add change log

* PRO-16890 : Implement review comments

Corrected conditional checks to use "===" & '!==' for comparison and
renamed variables with self explanatory names

* PRO-16890 : Implement review comments

Co-authored-by: mayank.nehru <mayank.nehru@HP-Mayanknehru>

Bumped version to 0.3.0