fix(dev-infra): migrate dev-infra config loading to .ng-dev directory (#37142)
fix(dev-infra): migrate dev-infra config loading to .ng-dev directory (#37142)

Migrate to using .ng-dev directory for ng-dev configuration to better
allow management of the configuration using multiple files.  The
intention is to prevent the config file from becoming unruly.

PR Close #37142

mgechev/angular,brandonroberts/angular,gkalpak/angular,brandonroberts/angular,ocombe/angular,gdi2290/angular,alxhub/angular,JiaLiPassion/angular,manekinekko/angular,gdi2290/angular,shairez/angular,alxhub/angular,wKoza/angular,IdeaBlade/angular,manekinekko/angular,IdeaBlade/angular,mgechev/angular,ocombe/angular,JiaLiPassion/angular,filipesilva/angular,mgechev/angular,alxhub/angular,manekinekko/angular,filipesilva/angular,blesh/angular,blesh/angular,JiaLiPassion/angular,filipesilva/angular,angular/angular,wKoza/angular,ocombe/angular,brandonroberts/angular,angular/angular,shairez/angular,shairez/angular,gnomeontherun/angular,ocombe/angular,gdi2290/angular,JiaLiPassion/angular,IdeaBlade/angular,blesh/angular,wKoza/angular,angular-indonesia/angular,wKoza/angular,mgechev/angular,gdi2290/angular,filipesilva/angular,manekinekko/angular,angular/angular,ocombe/angular,angular/angular,gnomeontherun/angular,gkalpak/angular,alxhub/angular,gnomeontherun/angular,mgechev/angular,angular-indonesia/angular,wKoza/angular,angular-indonesia/angular,IdeaBlade/angular,shairez/angular,blesh/angular,alxhub/angular,gdi2290/angular,IdeaBlade/angular,gdi2290/angular,gkalpak/angular,brandonroberts/angular,gnomeontherun/angular,filipesilva/angular,wKoza/angular,blesh/angular,shairez/angular,manekinekko/angular,angular-indonesia/angular,brandonroberts/angular,ocombe/angular,brandonroberts/angular,manekinekko/angular,gkalpak/angular