Add CosmWasm smart contract support with the wasmd module

[jhernandezb]

• Adds the wasmd module and wires it up with the app and governance
• Script to upload Stargaze contracts
• Adds custom messages to interface with minter and marketplace contracts such as distribution to community pool and claim messages

[codecov-commenter]

Codecov Report

Merging #531 (ec962c9) into main (7240d6b) will increase coverage by 0.87%.
The diff coverage is 22.67%.

❗ Current head ec962c9 differs from pull request most recent head d68aa1b. Consider uploading reports for the commit d68aa1b to get more accurate results

@@            Coverage Diff            @@
##            main     #531      +/-   ##
=========================================
+ Coverage   9.41%   10.29%   +0.87%     
=========================================
  Files         52       55       +3     
  Lines       7283     7769     +486     
=========================================
+ Hits         686      800     +114     
- Misses      6549     6912     +363     
- Partials      48       57       +9     

Impacted Files	Coverage Δ
app/genesis.go	0.00% <0.00%> (ø)
app/upgrades.go	12.50% <0.00%> (+6.43%)	⬆️
x/alloc/types/codec.go	0.00% <ø> (ø)
x/alloc/types/genesis.pb.go	2.07% <ø> (ø)
x/alloc/types/params.pb.go	1.11% <ø> (ø)
x/alloc/types/query.pb.go	1.67% <ø> (ø)
x/alloc/types/tx.pb.go	0.82% <ø> (ø)
x/claim/types/claim_record.pb.go	1.62% <ø> (ø)
x/claim/types/genesis.pb.go	1.47% <ø> (ø)
x/claim/types/params.pb.go	0.96% <ø> (ø)
... and 12 more

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[shanev]

Just a handful of comments. Looks very complete to me and so far haven't had any issues on devnet or the testnet.