migrate and upgrade tcr + root of trust modules

[ETeissonniere]

Context

Migrate the TCR out of the PKI repo and make it part of the Nodle chain one.

Fix #79.

• Add TCR module
• Add root of trust module
• Add root of trust rpc
• Check weights

Sanity

• I have incremented the runtime version number

Quality

• I have added unit tests, and they are passing
• I have added benchmarks to my pallet
• I have added the benchmarks to the node
• I have added comments and documentation

Testing

• The node runs fine on a development network
• The node runs fine on a local network
• The node runs fine on an upgraded local network
• The node can synchronize the existing network