[FAB-9330] Refactor top-level .gitignore into subdirs

Rather than cram most .gitignore content into the top-level .gitignore
file, partition it into lower-level .gitignore files, as is already done
with a couple subdirectories, just to be consistent.

I'm sure these files could be even tidier but this seems sufficient for
a first pass.

Change-Id: I0cc8cb2a9d7fa82c4f6de1aef9f82107c8cc7a6a
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>

.gitignore

@@ -9,25 +9,3 @@
 /config
 .DS_Store
 .project
-
-first-network/channel-artifacts/*.tx
-first-network/channel-artifacts/*.block
-first-network/crypto-config/*
-first-network/docker-compose-e2e.yaml
-first-network/ledgers
-first-network/ledgers-backup
-
-chaincode-docker-devmode/myc.block
-chaincode-docker-devmode/chaincode/sacc/sacc
-chaincode-docker-devmode/chaincode/chaincode_example02/chaincode_example02
-
-# fabric sdk node modules
-fabcar/node_modules/
-fabcar/package-lock.json
-fabcar/hfc-key-store/
-
-# balance transfer sample
-balance-transfer/.DS_Store
-balance-transfer/node_modules/*
-balance-transfer/package-lock.json
-balance-transfer/fabric-client-kv-org*

balance-transfer/.gitignore

@@ -0,0 +1,3 @@
+/node_modules/*
+/package-lock.json
+/fabric-client-kv-org*

balance-transfer/typescript/.gitignore

@@ -1,4 +1,4 @@
 node_modules
 package-lock.json
 dist
-types/fabric-client
+types/fabric-client

chaincode-docker-devmode/.gitignore

@@ -0,0 +1,3 @@
+/myc.block
+/chaincode/sacc/sacc
+/chaincode/chaincode_example02/chaincode_example02

fabcar/.gitignore

@@ -0,0 +1,3 @@
+/node_modules/
+/package-lock.json
+/hfc-key-store/

first-network/.gitignore

@@ -0,0 +1,6 @@
+/channel-artifacts/*.tx
+/channel-artifacts/*.block
+/crypto-config/*
+/docker-compose-e2e.yaml
+/ledgers
+/ledgers-backup