feat: Update import paths and remove unstable flag

This commit updates the import paths in various files to use the new
jsr namespace instead of the previous https://deno.land/x/ paths. It
also removes the --unstable flag from the deno test command in the
Makefile.

Makefile

@@ -1,5 +1,5 @@
 test:
-	deno test --unstable
+	deno test
 
 fmt:
 	deno fmt

denops/@ddc-filters/converter_fuzzy.ts

@@ -1,13 +1,13 @@
-import type { Denops } from "https://deno.land/x/ddc_vim@v6.0.0/deps.ts";
+import type { Denops } from "jsr:@denops/std@7.0.1";
 import type {
   Item,
   PumHighlight,
-} from "https://deno.land/x/ddc_vim@v6.0.0/types.ts";
+} from "jsr:@shougo/ddc-vim@6.0.0/types";
 import {
   BaseFilter,
   FilterArguments,
   OnInitArguments,
-} from "https://deno.land/x/ddc_vim@v6.0.0/base/filter.ts";
+} from "jsr:@shougo/ddc-vim@6.0.0/filter";
 import * as fuzzy from "../../fuzzy.ts";
 
 type Params = { hlGroup: string };

denops/@ddc-filters/matcher_fuzzy.ts

@@ -1,8 +1,8 @@
-import { Item } from "https://deno.land/x/ddc_vim@v6.0.0/types.ts";
+import { Item } from "jsr:@shougo/ddc-vim@6.0.0/types";
 import {
   BaseFilter,
   FilterArguments,
-} from "https://deno.land/x/ddc_vim@v6.0.0/base/filter.ts";
+} from "jsr:@shougo/ddc-vim@6.0.0/filter";
 import * as fuzzy from "../../fuzzy.ts";
 
 type Params = {

denops/@ddc-filters/sorter_fuzzy.ts

@@ -1,8 +1,8 @@
-import { Item } from "https://deno.land/x/ddc_vim@v6.0.0/types.ts";
+import { Item } from "jsr:@shougo/ddc-vim@6.0.0/types";
 import {
   BaseFilter,
   FilterArguments,
-} from "https://deno.land/x/ddc_vim@v6.0.0/base/filter.ts";
+} from "jsr:@shougo/ddc-vim@6.0.0/filter";
 import * as fuzzy from "../../fuzzy.ts";
 
 type Params = Record<string, never>;

test.ts

@@ -2,12 +2,12 @@ import * as Fuzzy from "./fuzzy.ts";
 import * as Matcher from "./denops/@ddc-filters/matcher_fuzzy.ts";
 import * as Sorter from "./denops/@ddc-filters/sorter_fuzzy.ts";
 import * as Converter from "./denops/@ddc-filters/converter_fuzzy.ts";
-import { assertEquals } from "https://deno.land/std@0.224.0/testing/asserts.ts";
+import { assertEquals } from "jsr:@std/assert@1.0.1";
 import {
   assertSpyCallArg,
   stub,
 } from "https://deno.land/std@0.224.0/testing/mock.ts";
-import type { PumHighlight } from "https://deno.land/x/ddc_vim@v6.0.0/types.ts";
+import type { PumHighlight } from "jsr:@shougo/ddc-vim@6.0.0/types";
 
 const matcher = new Matcher.Filter();
 const sorter = new Sorter.Filter();