Work on macro binding generation, some cleanup needed, rename runner to plugin

crates/runner/plugin/cargo_test.lua

@@ -1,16 +0,0 @@
-query = [[(
-    (attribute_item
-        (meta_item
-            (identifier) @test)) @attribute
-    .
-    (function_item
-        name: (identifier) @name) @funciton
-)]]
-
-function run_test(name)
-    local command = 'cargo test -- ' .. name
-    local openPop = assert(io.popen(command, 'r'))
-    local output = openPop:read('*all')
-    openPop:close()
-    return output
-end