JS add some missing static functions

[baudev]

This PR add two more useful functions:

• from() for TPM_HANDLE class
• nullTicket() for TPMT_TK_HASHCHECK class

It’s a small step forward in the hope of seeing the JS library functional one day! (PCR_Read() is not working for example…)

[msftclas]

All CLA requirements met.

[baudev]

The last commit add also nullObject() method for TPMT_SYM_DEF_OBJECT.

[amarochk]

What is the advantage of a static method over the direct constructor usage?

[baudev]

Any excepts that it matches with the CPP examples such as :

• https://github.com/Microsoft/TSS.MSR/blob/master/TSS.CPP/Samples/Samples.cpp#L2365
• https://github.com/Microsoft/TSS.MSR/blob/master/TSS.CPP/Samples/Samples.cpp#L2913

It's just a small comfort to make them existing! I don't see any reason to refuse implementing them in Node.JS as they exist in the CPP version.

[amarochk]

Indeed, Java version has from(), too. It is the original TSS.Net that does not have it.

Thank you for your contribution! I'm going to merge it now.

One note, in case you'll be doing any additions in the future. TpmTypes.js is actually an auto-generated file, so please do not change anything in existing methods or comments, as these changes will be lost. And in order to add new methods I'll add a new snippets file src/TpmExtensions.js.snips, similar to how it is done in TSS.Java.