chore: udpate importer to only output unixfs things

BREAKING CHANGE:

If you specify `raw-nodes` to be true or `cid-version` to be `1`
and your data fits in one chunk, you would previously get a `CID`
that resolves to an `ipld-raw` node.

Now you will get a `CID` that resolves to a `dag-pb` node, so the
output of every import will be a `unixfs` object.

package.json

@@ -105,7 +105,7 @@
     "ipfs-repo": "^0.30.0",
     "ipfs-unixfs": "^0.3.0",
     "ipfs-unixfs-exporter": "^0.41.0",
-    "ipfs-unixfs-importer": "^0.44.0",
+    "ipfs-unixfs-importer": "^0.45.0",
     "ipfs-utils": "^0.7.1",
     "ipld": "~0.25.0",
     "ipld-bitcoin": "~0.3.0",

test/cli/files.js

@@ -218,7 +218,7 @@ describe('files', () => runOnAndOff((thing) => {
 
     const out = await ipfs('add test/fixtures/less-than-default-max-chunk-size --cid-version=1')
     expect(out)
-      .to.eql('added bafkreie3abdlmy7dtxddm4vkbhd2x2yax5scf4m35eyxf3ywj2uwkjbhgi less-than-default-max-chunk-size\n')
+      .to.eql('added bafybeiaoh5okvpnuhndsz4kgdhulnkm566rz7w7il6r2zm6wxu5f5uqlsu less-than-default-max-chunk-size\n')
   })
 
   it('add with cid-version=1 > default max chunk size', async function () {
@@ -250,7 +250,7 @@ describe('files', () => runOnAndOff((thing) => {
 
     const out = await ipfs('add test/fixtures/less-than-default-max-chunk-size --cid-version=1 --raw-leaves=true')
     expect(out)
-      .to.eql('added bafkreie3abdlmy7dtxddm4vkbhd2x2yax5scf4m35eyxf3ywj2uwkjbhgi less-than-default-max-chunk-size\n')
+      .to.eql('added bafybeiaoh5okvpnuhndsz4kgdhulnkm566rz7w7il6r2zm6wxu5f5uqlsu less-than-default-max-chunk-size\n')
   })
 
   it('add with cid-version=1 and raw-leaves=true > default max chunk size', async function () {

test/core/files.spec.js

@@ -39,8 +39,8 @@ describe('files', function () {
       }))
 
       expect(files.length).to.equal(1)
-      expect(files[0].cid.toString()).to.equal('bafkreifojmzibzlof6xyh5auu3r5vpu5l67brf3fitaf73isdlglqw2t7q')
-      expect(files[0].size).to.equal(3)
+      expect(files[0].cid.toString()).to.equal('bafybeide2caf5we5a7izifzwzz5ds2gla67vsfgrzvbzpnyyirnfzgwf5e')
+      expect(files[0].size).to.equal(11)
     })
 
     it('should add a file with a v1 CID and not raw leaves', async () => {