Pruning for: exec, log_index, tx_lookup, history stages

[AskAlexSharov]

• Implemented pruning for exec, log_index, tx_lookup, history stages
• Prune options are not boolean anymore - they are alias to uint64 - with "pruning distance" meaning
• invert --storage-mode to --prune. And db migration for it.
• added flags --prune.*.older
• integration: add to all stage commands flag --prune.to
• reduce amount of logs (by printing only timings slower than 10ms)
• Rename: integration set_storage_mode
• TEVM - move to --experiments=tevm,... flag

Migration guide for release notes:

Flag --prune does replace and Invert --storage-mode flag.
If --storage-mode=h means "please DON'T prune history" - then --prune=h means "please DO prune history".
Example (all modes are hrtc): if you using --storage-mode=ht change to --prune=rc

New flag docs:

Choose which ancient data delete from DB: 
	h - prune history (ChangeSets, HistoryIndices - used by historical state access)
	r - prune receipts (Receipts, Logs, LogTopicIndex, LogAddressIndex - used by eth_getLogs and similar RPC methods)
	t - prune transaction by it's hash index
	c - prune call traces (used by trace_* methods)
Does delete data older than 90K block (can set another value by '--prune.*.older' flags). 
If item is NOT in the list - means NO pruning for this data.	

[AlexeyAkhunov]

This looks great, thank you!

[prakash9950]

My account cypro is pending but no one help me withdraw I think this is not true system