refact(bsr): Use JSON for session meta and summary data

The session metadata is provided all at once when a new bsr is opened.
While the session recording metadata records metadata about a recording
while the recording is happening, notably it records each time a new
connection occurs.

The nested structure of the session metadata does not lend itself to the
append-only syntax of the recording meta file. In addition we do not
want to mix different kinds of metadata together. Thus the session
metadata is now written to a separate file in the BSR, and is written as
JSON which better handles the nested structure and allows for simpler
encoding/decoding.

Similarly the summary files are intended to be written to as containers
close and have been switched to JSON.

internal/bsr/testdata/TestBsr/session_multiplexed/opened/.journal

@@ -2,10 +2,13 @@ CREATING SHA256SUM.sig
 CREATED SHA256SUM.sig
 CREATING SHA256SUM
 CREATED SHA256SUM
-CREATING session.meta
-CREATED session.meta
-CREATING session.summary
-CREATED session.summary
+CREATING session-recording.meta
+CREATED session-recording.meta
+CREATING session-meta.json
+CREATED session-meta.json
+CLOSED session-meta.json
+CREATING session-recording-summary.json
+CREATED session-recording-summary.json
 CREATING bsrKey.pub
 CREATED bsrKey.pub
 CLOSING bsrKey.pub

internal/bsr/testdata/TestBsr/session_multiplexed/opened/SHA256SUM

@@ -3,3 +3,4 @@
 .*  wrappedPrivKey
 .*  pubKeyBsrSignature.sign
 .*  pubKeySelfSignature.sign
+.*  session-meta.json

internal/bsr/testdata/TestBsr/session_multiplexed/opened/conn_1/.journal

@@ -2,7 +2,7 @@ CREATING SHA256SUM.sig
 CREATED SHA256SUM.sig
 CREATING SHA256SUM
 CREATED SHA256SUM
-CREATING connection.meta
-CREATED connection.meta
-CREATING connection.summary
-CREATED connection.summary
+CREATING connection-recording.meta
+CREATED connection-recording.meta
+CREATING connection-recording-summary.json
+CREATED connection-recording-summary.json

internal/bsr/testdata/TestBsr/session_multiplexed/opened/conn_1/chan_1/.journal

@@ -2,7 +2,7 @@ CREATING SHA256SUM.sig
 CREATED SHA256SUM.sig
 CREATING SHA256SUM
 CREATED SHA256SUM
-CREATING channel.meta
-CREATED channel.meta
-CREATING channel.summary
-CREATED channel.summary
+CREATING channel-recording.meta
+CREATED channel-recording.meta
+CREATING channel-recording-summary.json
+CREATED channel-recording-summary.json

internal/bsr/testdata/TestBsr/session_multiplexed/opened/session-recording.meta

@@ -0,0 +1,2 @@
+id: session_123456789
+protocol: TEST

internal/bsr/testdata/TestBsr/session_multiplexed/opened/session.meta

@@ -1,35 +0,0 @@
-id: session_123456789
-protocol: TEST
-user_publicId: user123
-user_scope_publicId: global
-user_scope_type: global
-target_publicId: target123
-target_scope_publicId: proj123
-target_scope_type: project
-target_scope_parentId: org123
-target_defaultPort: 0
-target_sessionMaxSeconds: 0
-target_sessionConnectionLimit: 0
-worker_publicId: w_12345
-worker_version: 0.25.5
-worker_sha: beepboopgitsha
-staticHost_publicId: host123
-staticHostCatalog_publicId: staticcat123
-staticHostCatalog_projectId: proj123
-staticHost_address: 127.0.0.1
-scs123_staticCredentialStore_publicId: scs123
-scs123_staticCredentialStore_projectId: proj123
-scs123_staticCredentialStore_credential_scjson123_staticJsonCredential_publicId: scjson123
-scs123_staticCredentialStore_credential_scjson123_staticJsonCredential_projectId: proj123
-scs123_staticCredentialStore_credential_scjson123_staticJsonCredential_objectHmac: hmac
-vcs123_vaultCredentialStore_publicId: vcs123
-vcs123_vaultCredentialStore_projectId: proj123
-vcs123_vaultCredentialStore_vaultAddress: an/address
-vcs123_vaultCredentialStore_namespace: name
-vcs123_vaultCredentialStore_tlsServerName: imaserver
-vcs123_vaultCredentialStore_tlsSkipVerify: false
-vcs123_vaultCredentialStore_credential_vl123_vaultLibrary_publicId: vl123
-vcs123_vaultCredentialStore_credential_vl123_vaultLibrary_projectId: proj123
-vcs123_vaultCredentialStore_credential_vl123_vaultLibrary_vaultPath: /a/path
-vcs123_vaultCredentialStore_credential_vl123_vaultLibrary_httpMethod: GET
-vcs123_vaultCredentialStore_credential_vl123_vaultLibrary_credentialType: magic