fix: updated types to better reflect current luassert

[eliw00d]

spy.d.lua

• Fixed typo ---@pasram → ---@param (line 32)

stub.lua — major rewrite to match the actual source:

• Added luassert.stub.oncall class (returned by on_call_with) with returns(...) and invokes(func)
• Added luassert.stub.by_default class with returns(...) and invokes(func)
• Added luassert.stub class (extends luassert.spy) with the missing methods: returns(...), invokes(func), on_call_with(...), and by_default
• Changed the return type of stub.new() from luassert.spy to luassert.stub

mock.lua

• Added mock.clear(object) — was in the source but missing from types
• Added mock.revert(object) — was in the source but missing from types

match.lua

• Fixed match.is.True = match.False → match.is.False = match.False (copy-paste bug)

[eliw00d]

@sumneko