Introduce two layer trie for factory

[CoderZhi]

Based on #1880. Introduce two layer trie:
The first layer stores the roots of different namespaces
The second layer stores the values of a namespace

[codecov]

Codecov Report

Merging #1881 into master will decrease coverage by 1.6%.
The diff coverage is 33.59%.

@@            Coverage Diff             @@
##           master    #1881      +/-   ##
==========================================
- Coverage   61.51%   59.91%   -1.61%     
==========================================
  Files         165      173       +8     
  Lines       13551    14215     +664     
==========================================
+ Hits         8336     8517     +181     
- Misses       4155     4606     +451     
- Partials     1060     1092      +32

Impacted Files	Coverage Δ
action/protocol/vote/blacklist.go	92% <ø> (ø)	⬆️
action/protocol/staking/bucket_index.go	85.36% <ø> (ø)	⬆️
consensus/scheme/rolldpos/rolldposctx.go	69.97% <ø> (-3.79%)	⬇️
action/stake_adddeposit.go	0% <0%> (ø)
action/protocol/poll/protocol.go	23.43% <0%> (-1.16%)	⬇️
action/depositreward.go	63.63% <0%> (+3.63%)	⬆️
action/stake_restake.go	0% <0%> (ø)
action/protocol/staking/protocol.go	0% <0%> (ø)	⬆️
action/stake_create.go	0% <0%> (ø)
action/claimreward.go	63.63% <0%> (+3.63%)	⬆️
... and 30 more

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