modules/zstd: Add initial ZSTD Encoder procs

[lpawelcz]

This PR adds initial procs of the ZSTD Encoder. It's based on #1654.

Changes in this PR consist of:

• Adding AlignedParallelRam proc - Responsible for handling Read/Write operations on multiple RAM models in parallel.
• Adding HashTable proc - Generic Hash Table implementation. It uses underlying RAM models for operation and is controlled with a Read/Write Request/Response channels interface. In the ZSTD Encoder, it is used for fast lookup of repeating symbols in the input data buffer.
• Adding HistoryBuffer proc - Data buffer capable of storing historical data and outputting said data from arbitrary chosen offset up to the top of the buffer. Uses AlignedParallelRam proc underneath.
• Adding MatchFinder proc - Processes data stream from the input buffer in the system memory. Searches for repeating symbol patterns in the HashTable proc. Symbols that are not found are stored directly as literals in the literals buffer, while those that have matches are stored as sequences in the sequence buffer, using the matched offset and length information. Sequence and Literals Buffers are implemented in the system memory accessible via the AXI interface.

This PR is currently a WIP.
The following work needs to be finished to mark this PR as ready for review:

• Fix MatchFinder codegen
• Enable back the IR benchmarks, codegen, synthesis and P&R targets in the CI