Fix error related to "Types must be imported using a type-only import when 'verbatimModuleSyntax' is enabled"

Hi,

Using 'tsc' CI there's issues about import not using type-only import when using 'verbatimModuleSyntax': true in tsconfig.json file.

$ tsc
node_modules/@uiw/react-codemirror/src/getDefaultExtensions.ts:1:10 - error TS1484: 'Extension' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

1 import { Extension } from '@codemirror/state';
           ~~~~~~~~~

node_modules/@uiw/react-codemirror/src/getDefaultExtensions.ts:3:22 - error TS1484: 'BasicSetupOptions' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

3 import { basicSetup, BasicSetupOptions } from '@uiw/codemirror-extensions-basic-setup';
                       ~~~~~~~~~~~~~~~~~

node_modules/@uiw/react-codemirror/src/index.tsx:2:23 - error TS1484: 'EditorStateConfig' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

2 import { EditorState, EditorStateConfig, Extension, StateField } from '@codemirror/state';
                        ~~~~~~~~~~~~~~~~~

node_modules/@uiw/react-codemirror/src/index.tsx:2:42 - error TS1484: 'Extension' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

2 import { EditorState, EditorStateConfig, Extension, StateField } from '@codemirror/state';
                                           ~~~~~~~~~

node_modules/@uiw/react-codemirror/src/index.tsx:4:10 - error TS1484: 'BasicSetupOptions' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

4 import { BasicSetupOptions } from '@uiw/codemirror-extensions-basic-setup';
           ~~~~~~~~~~~~~~~~~

node_modules/@uiw/react-codemirror/src/index.tsx:6:10 - error TS1484: 'Statistics' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

6 import { Statistics } from './utils';
           ~~~~~~~~~~

node_modules/@uiw/react-codemirror/src/useCodeMirror.ts:6:10 - error TS1484: 'ReactCodeMirrorProps' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

6 import { ReactCodeMirrorProps } from '.';

Start with node_modules/@uiw/react-codemirror/src/getDefaultExtensions.ts, index.tsx, and useCodeMirror.ts, then review the reported imports and the repository's tsconfig.json. Run tsc with verbatimModuleSyntax enabled; done means the listed TS1484 errors no longer occur.