feat: Reduce initial memory allocations for collections
feat: Reduce initial memory allocations for collections

  - Many small collections are created at runtime, the default allocation for
    maps, even though small, still requires memory. Specifying a very small
    initial allocation prevents unnecesary allocations and has no measurable
    effect on performance. A small incremental change.

Signed-off-by: Jim.Idle <d79aad3085f9fd5feb459e6dde516ee4222f4906@gatherstars.com>

ericvergnaud/antlr4,antlr/antlr4,antlr/antlr4,antlr/antlr4,parrt/antlr4,ericvergnaud/antlr4,parrt/antlr4,antlr/antlr4,antlr/antlr4,antlr/antlr4,parrt/antlr4,parrt/antlr4,antlr/antlr4,antlr/antlr4,ericvergnaud/antlr4,ericvergnaud/antlr4,ericvergnaud/antlr4,ericvergnaud/antlr4,antlr/antlr4,parrt/antlr4,parrt/antlr4,ericvergnaud/antlr4,ericvergnaud/antlr4,ericvergnaud/antlr4,parrt/antlr4,ericvergnaud/antlr4,parrt/antlr4,parrt/antlr4,parrt/antlr4,antlr/antlr4