Combine npm run build with docgen scripts (#1105)

* Combine `npm run build` with `docgen` scripts

* Remove duplicate instances of `npm run build` from docgen process

* Also ignore the dist/ directory

Author: TheIronDev

.gitignore

@@ -3,6 +3,7 @@
 .tmp
 .vscode/
 coverage
+dist/
 docgen/html
 docgen/*/temp
 docgen/*/markdown

package.json

@@ -159,10 +159,10 @@
     "apidocs": "node docgen/generate-docs.js",
     "docgen:v1:extract": "api-extractor run -c docgen/api-extractor.v1.json --local",
     "docgen:v1:gen": "api-documenter-fire markdown -i docgen/v1 -o docgen/v1/markdown && api-documenter-fire toc -i docgen/v1 -o docgen/v1/markdown/toc -p /docs/reference/functions",
-    "docgen:v1": "npm run docgen:v1:extract && npm run docgen:v1:gen",
+    "docgen:v1": "npm run build && npm run docgen:v1:extract && npm run docgen:v1:gen",
     "docgen:v2:extract": "api-extractor run -c docgen/api-extractor.v2.json --local",
     "docgen:v2:gen": "api-documenter-fire markdown -i docgen/v2 -o docgen/v2/markdown && api-documenter-fire toc -i docgen/v2 -o docgen/v2/markdown/toc -p /docs/reference/functions/v2",
-    "docgen:v2": "npm run docgen:v2:extract && npm run docgen:v2:gen",
+    "docgen:v2": "npm run build && npm run docgen:v2:extract && npm run docgen:v2:gen",
     "build:pack": "rm -rf lib && npm install && tsc -p tsconfig.release.json && npm pack",
     "build:release": "npm ci --production && npm install --no-save typescript firebase-admin && tsc -p tsconfig.release.json",
     "build": "tsc -p tsconfig.release.json",