checker: check shared variables types (fix #23313)

[yuyi98]

This PR check shared variables types (fix #23313, fix #23314)

• Check shared variables types.
• Add test.

enum Foo {
	zero
	one
}

fn main() {
	shared foo := Foo.one
	rlock foo {
		match foo {
			.zero { println('0000') }
			.one { println('1111') }
		}
	}
}

PS D:\Test\v\tt1> v run .
tt1.v:7:16: error: shared variables must be structs, arrays or maps
    5 | 
    6 | fn main() {
    7 |     shared foo := Foo.one
      |                   ~~~~~~~
    8 |     rlock foo {
    9 |         match foo {

_{Huly®: V_0.6-21748}

[spytheman]

Excellent, thank you.