Fully parse the smart contract sanctuary ethereum/mainnet dataset

[Xanewok]

We did some substantial progress towards that; let's get that over the finish line.

The test suite can be run with:

$ infra run --release --bin solidity_testing_sanctuary -- ethereum mainnet

Remaining

• add public and internal to UnnamedFunctionAttribute till 0.5.0 #796
• allow var in TupleDeconstructionStatement before 0.5.0 #840
• fix parsing empty /**/ comments #844
• add private to UnnamedFunctionAttribute till 0.5.0 #842
• support unicode characters in string literals up to 0.7.0 #800
• add override and virtual to ConstructorAttribute #849
• parse line breaks without newlines #854
• allow parsing ColonEqual as two separate tokens before 0.5.5 #852
• support dots in yul identifiers from 0.5.8 till 0.7.0 #869
• Allow for CRLF line ending as an AsciiEscape #879
• Fix parsing ambiguous call options #862
• support string literals in version pragmas #839
• fix: Mark pure and view as only used since 0.4.16 and add missing constant attribute #887
• fix: Also allow unicode characters in string literals in 0.4.11 #888
• fix: Mark delete as prefix expression rather than a dedicated statement #889
• fix: Properly mark override as introduced since 0.6.0 #890
• fix: Don't consume the dot in decimal literals if not followed by digit since 0.5.0 #891
• fix: Allow duplicate indexed event attribute until 0.8.18 #921
• fix: Support arbitrary escapes until 0.4.25 #923
• support string literals in version pragmas #839
• Skip contracts from Sanctuary that rely on exotic parser bugs #896
• Patch known buggy compiler versions for sanctuary #934