Revert "Remove support for importing/exporting and JSON encoding/deco…

[turbolent]

Reverts #2248

The Emulator actually relies on being able to export path links.

[github-actions]

Cadence Benchstat comparison

This branch with compared with the base branch onflow:master commit 41f1c5b
The command for i in {1..N}; do go test ./... -run=XXX -bench=. -benchmem -shuffle=on; done was used.
Bench tests were run a total of 7 times on each branch.

Collapsed results for better readability

	old.txt	new.txt
	time/op		delta
CheckContractInterfaceFungibleTokenConformance-2	118µs ± 0%	117µs ± 0%	~	(p=1.000 n=1+1)
ContractInterfaceFungibleToken-2	39.8µs ± 0%	38.8µs ± 0%	~	(p=1.000 n=1+1)
ExportType/composite_type-2	358ns ± 0%	507ns ± 0%	~	(p=1.000 n=1+1)
ExportType/simple_type-2	55.0ns ± 0%	62.0ns ± 0%	~	(p=1.000 n=1+1)
InterpretRecursionFib-2	2.29ms ± 0%	2.37ms ± 0%	~	(p=1.000 n=1+1)
NewInterpreter/new_interpreter-2	1.18µs ± 0%	1.19µs ± 0%	~	(p=1.000 n=1+1)
NewInterpreter/new_sub-interpreter-2	636ns ± 0%	662ns ± 0%	~	(p=1.000 n=1+1)
ParseArray-2	8.81ms ± 0%	8.30ms ± 0%	~	(p=1.000 n=1+1)
ParseDeploy/byte_array-2	12.7ms ± 0%	12.5ms ± 0%	~	(p=1.000 n=1+1)
ParseDeploy/decode_hex-2	1.26ms ± 0%	1.31ms ± 0%	~	(p=1.000 n=1+1)
ParseFungibleToken/With_memory_metering-2	216µs ± 0%	192µs ± 0%	~	(p=1.000 n=1+1)
ParseFungibleToken/Without_memory_metering-2	173µs ± 0%	149µs ± 0%	~	(p=1.000 n=1+1)
ParseInfix-2	7.59µs ± 0%	7.24µs ± 0%	~	(p=1.000 n=1+1)
QualifiedIdentifierCreation/One_level-2	2.39ns ± 0%	2.39ns ± 0%	~	(p=1.000 n=1+1)
QualifiedIdentifierCreation/Three_levels-2	137ns ± 0%	139ns ± 0%	~	(p=1.000 n=1+1)
RuntimeResourceDictionaryValues-2	5.49ms ± 0%	5.26ms ± 0%	~	(p=1.000 n=1+1)
RuntimeScriptNoop-2	7.06µs ± 0%	8.31µs ± 0%	~	(p=1.000 n=1+1)
SuperTypeInference/arrays-2	328ns ± 0%	337ns ± 0%	~	(p=1.000 n=1+1)
SuperTypeInference/composites-2	139ns ± 0%	137ns ± 0%	~	(p=1.000 n=1+1)
SuperTypeInference/integers-2	91.7ns ± 0%	93.9ns ± 0%	~	(p=1.000 n=1+1)
ValueIsSubtypeOfSemaType-2	96.7ns ± 0%	95.2ns ± 0%	~	(p=1.000 n=1+1)
	alloc/op		delta
CheckContractInterfaceFungibleTokenConformance-2	48.9kB ± 0%	48.9kB ± 0%	~	(all equal)
ContractInterfaceFungibleToken-2	23.2kB ± 0%	23.2kB ± 0%	~	(all equal)
ExportType/composite_type-2	136B ± 0%	136B ± 0%	~	(all equal)
ExportType/simple_type-2	0.00B	0.00B	~	(all equal)
InterpretRecursionFib-2	1.00MB ± 0%	1.00MB ± 0%	~	(all equal)
NewInterpreter/new_interpreter-2	768B ± 0%	768B ± 0%	~	(all equal)
NewInterpreter/new_sub-interpreter-2	200B ± 0%	200B ± 0%	~	(all equal)
ParseArray-2	2.81MB ± 0%	2.73MB ± 0%	~	(p=1.000 n=1+1)
ParseDeploy/byte_array-2	4.28MB ± 0%	4.27MB ± 0%	~	(p=1.000 n=1+1)
ParseDeploy/decode_hex-2	214kB ± 0%	214kB ± 0%	~	(all equal)
ParseFungibleToken/With_memory_metering-2	28.9kB ± 0%	28.9kB ± 0%	~	(p=1.000 n=1+1)
ParseFungibleToken/Without_memory_metering-2	28.9kB ± 0%	28.9kB ± 0%	~	(p=1.000 n=1+1)
ParseInfix-2	1.91kB ± 0%	1.92kB ± 0%	~	(p=1.000 n=1+1)
QualifiedIdentifierCreation/One_level-2	0.00B	0.00B	~	(all equal)
QualifiedIdentifierCreation/Three_levels-2	64.0B ± 0%	64.0B ± 0%	~	(all equal)
RuntimeResourceDictionaryValues-2	2.30MB ± 0%	2.28MB ± 0%	~	(p=1.000 n=1+1)
RuntimeScriptNoop-2	2.70kB ± 0%	2.70kB ± 0%	~	(all equal)
SuperTypeInference/arrays-2	96.0B ± 0%	96.0B ± 0%	~	(all equal)
SuperTypeInference/composites-2	0.00B	0.00B	~	(all equal)
SuperTypeInference/integers-2	0.00B	0.00B	~	(all equal)
ValueIsSubtypeOfSemaType-2	48.0B ± 0%	48.0B ± 0%	~	(all equal)
	allocs/op		delta
CheckContractInterfaceFungibleTokenConformance-2	806 ± 0%	806 ± 0%	~	(all equal)
ContractInterfaceFungibleToken-2	370 ± 0%	370 ± 0%	~	(all equal)
ExportType/composite_type-2	3.00 ± 0%	3.00 ± 0%	~	(all equal)
ExportType/simple_type-2	0.00	0.00	~	(all equal)
InterpretRecursionFib-2	18.9k ± 0%	18.9k ± 0%	~	(all equal)
NewInterpreter/new_interpreter-2	13.0 ± 0%	13.0 ± 0%	~	(all equal)
NewInterpreter/new_sub-interpreter-2	4.00 ± 0%	4.00 ± 0%	~	(all equal)
ParseArray-2	59.6k ± 0%	59.6k ± 0%	~	(all equal)
ParseDeploy/byte_array-2	89.4k ± 0%	89.4k ± 0%	~	(all equal)
ParseDeploy/decode_hex-2	63.0 ± 0%	63.0 ± 0%	~	(all equal)
ParseFungibleToken/With_memory_metering-2	768 ± 0%	768 ± 0%	~	(all equal)
ParseFungibleToken/Without_memory_metering-2	768 ± 0%	768 ± 0%	~	(all equal)
ParseInfix-2	48.0 ± 0%	48.0 ± 0%	~	(all equal)
QualifiedIdentifierCreation/One_level-2	0.00	0.00	~	(all equal)
QualifiedIdentifierCreation/Three_levels-2	2.00 ± 0%	2.00 ± 0%	~	(all equal)
RuntimeResourceDictionaryValues-2	36.9k ± 0%	36.9k ± 0%	~	(p=1.000 n=1+1)
RuntimeScriptNoop-2	43.0 ± 0%	43.0 ± 0%	~	(all equal)
SuperTypeInference/arrays-2	3.00 ± 0%	3.00 ± 0%	~	(all equal)
SuperTypeInference/composites-2	0.00	0.00	~	(all equal)
SuperTypeInference/integers-2	0.00	0.00	~	(all equal)
ValueIsSubtypeOfSemaType-2	1.00 ± 0%	1.00 ± 0%	~	(all equal)

[codecov]

Codecov Report

Merging #2381 (f4277a5) into master (41f1c5b) will increase coverage by 0.00%.
The diff coverage is 89.65%.

@@           Coverage Diff           @@
##           master    #2381   +/-   ##
=======================================
  Coverage   78.50%   78.51%           
=======================================
  Files         316      316           
  Lines       68471    68529   +58     
=======================================
+ Hits        53755    53807   +52     
- Misses      12918    12923    +5     
- Partials     1798     1799    +1     

Flag	Coverage Δ
unittests	78.51% <89.65%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
values.go	73.76% <78.94%> (+0.10%)	⬆️
encoding/json/decode.go	88.42% <90.47%> (+0.04%)	⬆️
encoding/json/encode.go	94.52% <100.00%> (+0.10%)	⬆️
runtime/convertValues.go	82.74% <100.00%> (+0.12%)	⬆️

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