User Manual files updates

Created by: pascalgouedo

The list of updates can be found below. For easier review, rendered pdf and html have been temporary added to docs.

New block diagram with FPU

Use of new block diagram. Removed APU mention and chapter. Updated extension names and versions. Added guidelines when synthesizing with FPU. Moved Verification information from introduction to a specific chapter. Moved Tracer chapter in Verification one.

Added new top level without apu interface for easier integration. Changed top level parameters:

• PULP_ZFINX => ZFINX
• PULP_XPULP => COREV_PULP
• PULP_CLUSTER => COREV_CLUSTER
• Added 2 new top level parameters for FPU instructions latencies.

Added a note and a link to new non-backward compatibility sub-chapter. Added v2.0.0 release template text with a point about mimpid value depending of parameters.

Detailed MSTATUS FS and SD fields description. Grouped CSRs by sub-chapters to generate index.

Corrected Hardware Loop body code.

Removed mention of latch-based Register File.

Update CVFPU information. Added CVFPU parameters setting for CV32E40P use case in FPU chapter Issue #668. Added a small reminder paragraph about MSTATUS.FS programming before FPU usage as well. Updated instructions latency table and data hazard paragraphs with FPU instructions.

Updated Instruction Fetch outstanding information. Added Transaction Ordering note in Instruction Fetch and Load/Store units chapters.

Moved uhartid and privlv CSRs and added zfinx CSR.

And generally like for all others commited files: Re-factored all tables to appear correctly in both PDF and HTML. Split way too loooooooonnnnnng lines or merged short ones.