variable declaration / assign declaration reconsideration

[dalance]

variable declaration and assign declaration seems to be similar. It may be confusable.
Additionally, visilibity of variable declaration may be less than other declarations because it doesn't have any keyword.

// variable declaration
a: logic [10];

// assign declaration
assign a = 1;

// assign declaration with type
assign a: logic [10] = 1;

Alternative idea.

// variable declaration
let a: logic [10];

// variable declaration with binding
let a: logic [10] = 1;

[dalance]

#27