Turned pin sockets, or even turned pin SIL arrays, are common, and you can use them for this, though the TO packages are best used with leads, as the larger ones, like TO3p and TO 220, are not really compatible with breadboard. As to TO100, it is trivial to use a 16pin turned pin socket, as these are cheap, and shape the pins to match the DIL8 layout, and use half the socket for each device. For the lead to wire adaptors, just buy the inexpensive JST connectors, and the stamped sockets, and either crimp the wires to them, or just order the premade JST female wire sets, as they are 0.1in spacing, and will handle most common component leads from IC's to TO220 just fine. Singles or ganged, your choice, though just getting the 10 way ones with premade wires works well, and you can cut nthem down to smaller, along with cut and strip the ends, and tin, to use into other connectors.