Fix to from amino

[Zetazzz]

Fixed toAmino and fromAmino implementations
refactored fromAmino method generating process:
fix strict null check build errors
omitempty and dont_omitempty handling for fields of all types and tested
bytesFromBase64 for bytes and bytes array
test every type for amino encoding and fixed some legacy bugs

Examples:
Amino type:

export interface AminoEncodingTestAmino {
  // scalar values without (amino.dont_omitempty) option can be optional in Amino type.
  b?: boolean;
  // scalar values with (amino.dont_omitempty) = true option is required in Amino type.
  // the field will be filled with default value of the type.
  d_o_b: boolean;
}

fromAmino:

  fromAmino(object: AminoEncodingTestAmino): AminoEncodingTest {
    const message = createBaseAminoEncodingTest();
    // if there's no input value, default logic from createBaseAminoEncodingTest() will be 
    // applied for both with or without (amino.dont_omitempty) = true
    if (object.b !== undefined && object.b !== null) {
      message.b = object.b;
    }
    // if there's no input value, default logic from createBaseAminoEncodingTest() will be 
    // applied for both with or without (amino.dont_omitempty) = true
    if (object.d_o_b !== undefined && object.d_o_b !== null) {
      message.dOB = object.d_o_b;
    }
  }

toAmino:

  toAmino(message: AminoEncodingTest): AminoEncodingTestAmino {
    const obj: any = {};
    obj.b = message.b;
    // default value will be applied with (amino.dont_omitempty) = true
    obj.d_o_b = message.dOB ?? false;
  }