Initial base files

[majestrate]

Contains:

• boilerplate for all of the i2p specific crypto parts minus aes
• some boilerplate for reseed and main function
• .gitignore
• some initial datastructures

[hkparker]

Really excited to merge this soon, interested in your thoughts on the comments.

[majestrate]

I use this in my git hooks to check the code before comitting, would suggest anyone else working on this code do the same.

[hkparker]

@majestrate I've been using this which formats on save and then I run tests manually, should be compatible.

[majestrate]

http://geti2p.net/en/docs/how/cryptography#DSA

[hkparker]

Anything that would be particularly useful to work on? Don't want to duplicate efforts.

[majestrate]

implement Lease, LeaseSet, RouterAddress, RouterInfo and Mapping from http://geti2p.net/en/docs/spec/common-structures

I'll start working on the rest of the bootstrap code during that, which means I'll be implementing RSA4096 and SU3 files.

[hkparker]

Alright, I've implemented those structures and pushed to the head of my master. Please review the changes and let me know if there's anything I should change or any functionally to add. If it looks good to you I'll go through and add tests, sanity checks, and comments for all the common structures.

[majestrate]

Doesn't compile, PR that fixes it inbound