refactor: Remove "browser" tsconfig jsons (#3286)

This pull request removes several `tsconfig.browser.json` files from
multiple packages and updates the corresponding `tsconfig.karma.json`
files to extend from the shared root configuration instead. This
streamlines TypeScript configuration across packages, reducing
redundancy and potential inconsistencies.

**TypeScript configuration cleanup:**

* Deleted `tsconfig.browser.json` files from the following packages to
consolidate configuration into the shared root config:
`autocertifier-server`, `cdn-location`, `geoip-location`, `proto-rpc`,
`sdk`, `trackerless-network`, and `utils`.

**Test configuration updates:**

* Updated `tsconfig.karma.json` files in `dht`, `proto-rpc`,
`trackerless-network`, and `utils` to extend from the shared root config
(`../../tsconfig.browser.json`) instead of the deleted package-local
config, and added necessary compiler options and includes directly.
* Ensured that all updated `tsconfig.karma.json` files explicitly
specify `outDir`, `noImplicitOverride`, and the appropriate `include`
paths.

Author: mondoreale

packages/autocertifier-server/tsconfig.browser.json

@@ -1,6 +1,9 @@
 {
-  "extends": "./tsconfig.browser.json",
+  "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
+    "outDir": "dist",
+    "noImplicitOverride": false,
     "types": ["jest", "jest-extended"]
-  }
+  },
+  "include": ["src", "package.json"]
 }

packages/cdn-location/tsconfig.browser.json

@@ -1,6 +1,9 @@
 {
-  "extends": "./tsconfig.browser.json",
+  "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
+    "outDir": "dist",
+    "noImplicitOverride": false,
     "types": ["jest"]
-  }
+  },
+  "include": ["src"]
 }

packages/dht/tsconfig.browser.json

@@ -1,6 +1,9 @@
 {
-  "extends": "./tsconfig.browser.json",
+  "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
+    "outDir": "dist",
+    "noImplicitOverride": false,
     "types": ["jest", "@streamr/test-utils/customMatcherTypes"]
-  }
+  },
+  "include": ["src", "generated"]
 }