style: restricted use of global as a global variable

`globalThis` is the correct name, so introduced an eslint rule to restrict using `global`

.eslintrc

@@ -33,6 +33,9 @@
       {
         "name": "global",
         "message": "Use `globalThis` instead"
+      },
+      {
+        "name": "window"
       }
     ],
     "require-yield": 0,

tests/utils/exec.ts

@@ -22,11 +22,11 @@ type ExecOpts = {
 };
 
 const tsConfigPath = path.resolve(
-  path.join(global.projectDir, 'tsconfig.json'),
+  path.join(globalThis.projectDir, 'tsconfig.json'),
 );
 
 const polykeyPath = path.resolve(
-  path.join(global.projectDir, 'src/bin/polykey.ts'),
+  path.join(globalThis.projectDir, 'src/bin/polykey.ts'),
 );
 
 const generateDockerArgs = (mountPath: string) => [
@@ -114,7 +114,7 @@ async function pkStdio(
 }> {
   const cwd =
     opts.cwd ??
-    (await fs.promises.mkdtemp(path.join(global.tmpDir, 'polykey-test-')));
+    (await fs.promises.mkdtemp(path.join(globalThis.tmpDir, 'polykey-test-')));
   // Recall that we attempt to connect to all specified seed nodes on agent start.
   // Therefore, for testing purposes only, we default the seed nodes as empty
   // (if not defined in the env) to ensure no attempted connections. A regular
@@ -241,7 +241,7 @@ async function pkExecWithoutShell(
 }> {
   const cwd =
     opts.cwd ??
-    (await fs.promises.mkdtemp(path.join(global.tmpDir, 'polykey-test-')));
+    (await fs.promises.mkdtemp(path.join(globalThis.tmpDir, 'polykey-test-')));
   const env = {
     ...process.env,
     ...opts.env,
@@ -293,7 +293,9 @@ async function pkExecWithShell(
 }> {
   const cwd = path.resolve(
     opts.cwd ??
-      (await fs.promises.mkdtemp(path.join(global.tmpDir, 'polykey-test-'))),
+      (await fs.promises.mkdtemp(
+        path.join(globalThis.tmpDir, 'polykey-test-'),
+      )),
   );
   const env = {
     ...process.env,
@@ -343,7 +345,7 @@ async function pkSpawnWithoutShell(
 ): Promise<ChildProcess> {
   const cwd =
     opts.cwd ??
-    (await fs.promises.mkdtemp(path.join(global.tmpDir, 'polykey-test-')));
+    (await fs.promises.mkdtemp(path.join(globalThis.tmpDir, 'polykey-test-')));
   const env = {
     ...process.env,
     ...opts.env,
@@ -383,7 +385,9 @@ async function pkSpawnWithShell(
 ): Promise<ChildProcess> {
   const cwd = path.resolve(
     opts.cwd ??
-      (await fs.promises.mkdtemp(path.join(global.tmpDir, 'polykey-test-'))),
+      (await fs.promises.mkdtemp(
+        path.join(globalThis.tmpDir, 'polykey-test-'),
+      )),
   );
   const env = {
     ...process.env,