Write manifest file with storage and payable according the contract needs

[shargon]

Close #128

[devhawk]

i like the use of attributes

[erikzhang]

https://github.com/neo-project/neo/blob/4aff0d3dba34f228dfe44bf0e9b68b4164fc2c71/neo/SmartContract/Manifest/ContractFeatures.cs#L6-L12

Maybe we can just use one attribute.

[shargon]

For storage i can detect the syscall if you prefer

[lock9]

Neo PR Test Report

Repository: neo-devpack-dotnet
Number: 129
Title: Write manifest file with storage and payable according the contract needs
Change description: Users can now use Payable and HasStorage flags.

Code version / branch

Neo-devpack-dotnet: shargon:fix-storage-payable

Test Results

Test Name	OS	Test Result
Initial UT	Windows 10 x64	OK
Compile Contract using Payable attribute	Windows 10 x64	OK
Compile Contract 2 using HasStorage attribute	Windows 10 x64	OK
Compile Contract using both HasStorage and Payable attributes	Windows 10 x64	OK

Additional info

Code worked as expected. The manifest file was generated correctly.
We noticed that it wasn't possible to compile the contract using the command line, but we suppose this is a different problem. The code is looking for the PDB file at the current folder, instead of the dll folder.

PS C:\Users\HP\Workspace\neo-devpack-dotnet> dotnet src\Neo.Compiler.MSIL\bin\Debug\netcoreapp2.0\neon.dll TestContract\bin\Debug\netstandard2.1\TestContract.dll
Neo.Compiler.MSIL console app v2.4.1.0
Open File Error:System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\HP\Workspace\neo-devpack-dotnet\TestContract\bin\Debug\netstandard2.1\TestContract\bin\Debug\netstandard2.1\TestContract.dll'.
   at System.IO.FileStream.ValidateFileHandle(SafeFileHandle fileHandle)
   at System.IO.FileStream.CreateFileOpenHandle(FileMode mode, FileShare share, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
   at System.IO.File.OpenRead(String path)
   at Neo.Compiler.Program.Main(String[] args) in C:\Users\HP\Workspace\neo-devpack-dotnet\src\Neo.Compiler.MSIL\Program.cs:line 60

Test List

1. Initial UT
Run solution unit tests.

2. Compile Contract using Payable attribute

Create a new SmartContract project and add the Payable attribute.

Expected result:

• Contract manifest should contain property payable set to true.

2. Compile Contract using HasStorage attribute

Create a new SmartContract project and add the HasStorage attribute.

Expected result:

• Contract manifest should contain property storage set to true.

2. Compile Contract using both HasStorage and Payable attributes

Create a new SmartContract project and add the HasStorage and Payable attributes.

Expected result:

• Contract manifest should contain property storage and payable set to true.

[lock9]

Reviewed and tested. Thanks!